Paulie;
Maybe, but the best way is to us an antivirus to be sure.
System Restore may this time and often does have the virus so
restoring accomplishes nothing.
No, sorry. To remove a virus, you must use your antivirus software. If your
antivirus software cannot remove the virus, the software's technical support
may be able to provide you with instructions to manually remove the virus.
System restore was designed to back up certain key operating system files,
like the registry, so that you can restore them to a known good state.
No. Try following the directions here to clean your system: http://housecall.trendmicro.com/
Then get a resident antivirus program to prevent further infection. Also,
either turn on XP's firewall or get a 3rd party firewall product. And after
all that, get spyware protection either by using adaware (basic) from http://www.lavasoftusa.com/ and/or (more options, more advanced) spybot from http://security.kolla.de/