Data1.cab error code & the ?check file?

[Whisp]

first of all i got play-online installed (AGAIN) and i goto check files. I did this a total of 4 times here's what i got
1)2 corrupted files
2)3 corrupted files
3)2 corrupted files
4)2 corrupted files
_______________
how can this be?? if the files corrupted it should still be corrupted. and not ever time was the same file corrupted.
EX) i had a few times img errors or the by_whoever their name is.. or some music file errors

NOW for the bad part!! i try to reinstall the game.. i get about 25% down which is almost done with the first disk when i get this Data1.cab error.. it says that files either corrupted or some other BULL___..

WTF's going on here.. how am i going to get this freaking thing fixed.

I could play the game before just fine now since i reinstalled this is getting bs.

PS: read my other post to see what's happened for the past.