can' t patch diablo 2 pb with game.exe help!!!!!!!!!!

[tuz]

i have already the patch but i failed to patch it and i don't know why.
There is a problem with the game.exe's checksum.
So,for the moment,i'm still in version 1.00 therefore i can't use the hack to play in 800*600.
I haven't start the game yet.I'm waiting for a solution to patch it.
Please help!!!!!!!!!!