I am also fighting with those sensors. For the moment, i can send you the code that i use, and a windows program that i am writing in order to calibrate and use this senor. It is a very very first draft, but it works (tested on windows xp). As soon as i will have a better version i will post them here.
The arduino code is very very simple:
Serial.println(analogRead(0),DEC); // prints the value read
The attached software work with a serial of 115200 bauds rate. So, do not change this on the arduino code.
Upps!, i can´t upload the file because is no heavy. I will upload to my server and edit this post to show the download link in few minutes...
In order to undertand the results, here you have a previos discussion in this forum:http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1251383821/all