how to solve the problems caused by kxvo.exe

these problems triggered in my pc when the error about kxvo appeared:

a) i cannot sign in to friendster

i keep coming back to the sign in page whenever i type my "right" username and password"

b) my yahoo messenger experiences error

i can't remember the exact error but it says that it has reached its breakpoint

c) i cannot view hidden files and folders

i keep on clicking on show hidden files and folders, then click apply and ok but still the hidden files does not appear

d) drives C and D opens in new window

whenever i click either of the two drives, it always open in new window but whenever i open folders(like Program Files or folders in My Documents), it does not.

I don't know if those problems were caused by or are related to ksvo.exe but i hope someone helps me to solve those problems. i found out in the internet that it was a virus and i need help on how to eliminate the related errors, problems caused by kxvo.exe and how to completely remove the virus and its related components in my pc.