Windows xp professional version 2002,service pack

Problem

I think my computer has been infected by virus,the problem is the virus had been removed but when I try to open hard disk drives like c: or d: or g: it prompts me to select a program from the list,and the option USE THE SELECED PROGRAM TO OPEN THIS TYPE OF FILE is not higlighted so that I am unable to check mark it and every time I have to open it by selecting internet explorer,pls help me with this..pls give me a full description about what to do ,clearly step by step.

Solution

after removing the virus ... some of the system file has became unstable .... so you are facing this type of problem ....
so the solution is to reinstall the windows xp professional sp2 again ....
if you have very important programs which you dont have back up then just you have to do is you start the set up by boot disk of windows xp sp2 (actually all windows cd s will be the boot disk only if we just copy the exact windows cd with out changing anything especially "cdlabel")
so just insert the boot disk cd in to the drive and make the boot from cd (it must be done b4 os loads) so just have the check in bios that the first boot device is cdrom and then boot the set from cd then it will ask "press enter to install winxp" you must press enter then after it will detect the partitions for "previously installed operating system" if it detect the installed "windows xp" means they it will prompt for repair option here... you must press R here ... if you press R at the first time before detecting i mean in the previous step than this means it will take you to recovery console ....
so besure to follow these steps....
after giving repair it will repair and ur problem will be solved