winupgro.exe trouble. help please!

hello!
My problem is this: I have downloaded a file from the web (a demo) and it came with winupgro.exe. After the virus disabled my NIS09, started asking for signatures on various programs like MSNmessenger, i tried to restart NIS 09, but when i clicked the icon or .exe file, nothing happened, even in the processes window.I deleted the infected file from Windows Explorer and after a while, the pc rebooted for itself, with no improvement whatsoever. Then i tried to reinstall NIS09 from the cd, but it failed and went into a loop rebooting after intalling and then instaling again, with errors in the process. I followed ur instuctions until CCleaner (which works on my laptop) failed to work. When i run it, it shows the window for a fraction of a second, and then it disappears. Have tried with ccleaner portable from a flash drive, but to no avail. I have mgtools and the GetLogs.bat file is this:
p.s: just noticed that Analyse.exe has the same behaviour as CCleaner, just disappears. And if i run CCleaner just after reboot, it works for a while longer, enough time to start the scan, but then disappears when everything loads.
Please help.
p.p.s:sorry for the bump, missed the no "..." note, thought my post was filtered as spam. I don't intend to get ahead of line, my apologies.
Thanks in advance.
Joao Soares