cant get MS-DOS to open

[gudism]

i'm trying to remove a nasty virus and i need to edit the
registry. after i change 'regedit.exe' to 'regedit.com'
i get a "cannot find exqps.exe This program is needed
for opening files of type 'MS-DOS Application". i get
the same response if i type 'command' in the 'run' part
of the 'start' menu. is there any other way i can get
round this? i'm gettin desperate as i really need to
remove this 'BACKDOOR.EXDIS' virus. any help would be
greatly appreicated. thanks
..

 

[Kelly]

Boot into safe mode and follow the process listed here:
http://securityresponse.symantec.com/avcenter/venc/data/backdoor.exdis.html

 

[Alex Nichol]

i'm trying to remove a nasty virus and i need to edit the
registry. after i change 'regedit.exe' to 'regedit.com'
i get a "cannot find exqps.exe This program is needed
for opening files of type 'MS-DOS Application".

The virus has sat on the file associations for exe and com, running
itself first and then passing the buck. Go to
http://www.dougknox.com/xp/xp_fixes.html
and get the File Association Fixes, near bottom on the left. for COM and
EXE : hopefully those are all you will need