arduino software will not let me change a thin

hello i have installed the arduino software and it will not let me change a thin at all can some one help me plz

Some details, please.
IDE version, platform, OS ?

the software on the computer will not let me change a thin at all

i have a ide running software ver is 1.5.2

Yes, but we need to know
1)Which computer
2)Which operating system
3)Which version of the IDE.

windows 7
mega 2560

OK, tell us what you can see.
Post a screen shot if necessary.

.

ware it say
for (int i = 0; i < 512; i++)
i need it to say 4096 but it will not let me change it or any thin at all

What happens if you go to "File" and click on "New" ?

nothing happens at all

But you managed to open the EEPROM example.
Do you remember how you got where you are?

yes
but if i open any thin and try to change any thin it will not let me

but if i open any thin and try to change any thin it will not let me

Yes, I think we're adequately clear on that now.
sp. "thing"

Do you remember how you got where you are?

yes

Care to share your recollections?

i am not sure

i just install it and ran it and i went to change a line but it will not

that is all i did

Can you close the IDE?

(I deleted your cross-post of this topic. Do not cross-post)

what do you mean by ide?

The thing in the picture in reply #7

i am sorry but i do not understand

The Arduino environment/editor - the thing you took a screen shot of in reply #7.
Can you close it?