Recently, i bought a new Arduino Duemilanove with the shield and Xbee. There is also this Xbee Explorer Dongle.
i was wondering if the Xbee Explorer Dongle (with the Xbee on it) can replace the shield and microcontroller board?
Thanks, appreciate all replies 
There is also this Xbee Explorer Dongle.
There is? Where?
I have the xBee USB Explorer from SFE. Maybe that is what he means. With one of the small cable-less USB to mini-USB converters, it would be "dongle like". But I have a 900 Pro and antenna; I like having a cable (though I would be happy with a much shorter one). In a break with SFE tradition, the USB explorer supports the Pro right out of the box (the regulated explorer and Fio do not, though both can be made to work).
Forgot to answer the OP's question. The USB explorer with nothing else will allow you to use an xBee module as a serial port on the PC and I assume other platforms that support USB serial ports. I will be using mine as a control and status interface at some point, but right now I use it to watch all the traffic back and forth between my Arduinos.
oh ok..because i m transmitting something with one Arduino to another Arduino wirelessly
So at the receiver end, i thought of using the Xbee Explorer Dongle with the Xbee on it to replace the microcontroller+Xbeeshield+Xbee
I can do that right?
I have already configured both transmitter Xbee and receiver Xbee with the X-CTU software...
So at the receiver end, i thought of using the Xbee Explorer Dongle with the Xbee on it to replace the microcontroller+Xbeeshield+Xbee
I can do that right?
The first reply was a hint for you to post a link to the device that only you refer to as a Xbee Explorer Dongle.
If you are referring to this:
then, yes, you can use this to replace a microcontroller+XBee shield.
That is the unit I use. A hacker's tip on usage. When I got mine, I cut the anti-static bag open at one end, slid the card out and then cut a V notch at the other end of the bag. I put my xBee 900 in the socket and slid it back in the bag with the antenna coming out the notch, then flipped the antenna up once it was all the way in. I realize it won't work quite as well with smaller antennas or no antenna, but what this does is keep it from getting shorted out by other stuff on my always overcrowded desk or slipped into my netbook case for field testing. Of course, if you are going to take the time to install it in a proper case then ignore my suggestion. But don't leave it out and exposed.
As Paul said, yes, this will work fine. I use PuTTY to connect to it. The first time you plug it in, Windows will do its thing and assign it a COM port like COM6 or whatever. Then you connect to it using that COM# in your favorite terminal emulator at whatever baud rate you have them configured. I use CRLF (actually either one; and whichever came next would just cause a zero length command to be ignored) as command separators and commas as parameter separators so they are easy to read/type and import into other applications. So you might see a conversation like this:
WHR,01,02
LOC,02,01,nn.nnnnn,nn.nnnnn
That would be station 1 asking station 2 where it is and station 2 responding to station 1 with a GPS location. Just an example and a suggestion; you can send whatever data format you wish. But unless you have a lot of data to transfer you will make things a lot easier if you make them human readable.
ok..here is the Xbee Explorer Dongle i am talking about....
So can that (Xbee Explorer Dongle) replace the shield + microcontroller?
Yes. The only difference between that and the one I have is the connector. Because I use the 900 Mhz and it has an antenna with a little size to it (not much with the low gain, but I may use a high gain at some point) I would not want it on a dongle suspended like that, but for most of the xBee line that would be more convenient.
ok thanks...i will try that out and let u guys know again
Hi guys, am i able to use the Xbee Explorer Dongle and replace it with both the transmitter and receiver mircocontroller + shield + Xbee?
Which means, am i able to just use two Xbee Explorer Dongle and both can communicate wirelessly via Arduino IDE?
You can connect two dongles to the same PC or to two different PCs, and the XBees perform exactly as if a wire was stretched.
You'll learn a lot more, of course, if you just try some of this stuff out for yourself.
Is there another type of chip( for example: Xbee Explorer Dongle) which can be powered by other external sources?
Is there another type of chip( for example: Xbee Explorer Dongle) which can be powered by other external sources?
To me, this question is completely lacking in context. Another type of chip? The object you compare it to, an XBee explorer dongle, is not a chip. It is a breakout board with a built in USB cable that is very short. It is not powered externally. It is powered by the USB port that it is communicating with.
What are you wishing to do?
Apologise for my mistake made. What i have in mind is that i would like to use board that can use external power source besides USB and replace it with the Arduino UNO board + Shield. That will be my transmitter and as for my receiver i would use Xbee Explorer Dongle.
So right now i am looking for a suitable board which able to replace my existing Arduino UNO board + Shield, do you get what am i trying to say PaulS?