About the tweak programm , i have followed every instruction , believe it or not the fields are already UNCHEKED .
I Then cheked it to disable it , restarted , then uncheked it , restarted , no change.
I replaced all the files with the ones in I386 folder
no change ,renamed to .com and excuted, no change.
"Luckly" i have my system restore already disabled 
So i cant go back .
This issue appeared also with ".reg" files ,REMEMBER the "undo.reg" file from mcafee? the confirmation messeage didn't appear asking me if i am sure or not , i had to press "entre" several times until i was able to catch the "yes" botton befor it disappeared like a ghost .
I have made dozens of virus scans from all the websites i knew ,and i am quite sure that I HAVE NO VIRUS , TROJAN , WORM or even PARASITE and aw-ware infecting my system ,pleaze try to help .
Thanx for your patience ,i know i have been talking too much these days , sorry for insolence.