IS PUP.EXE A PROCESS?

IF SO it may be a trojan/virus using pup.exe to hide the activitys. Does your CPU often have 90% + of its resources occupied by this process (CTRL + ALT + DEL got to processes to see).

----- IN ORDER------

Firstly go to
-http://grc.com/dcom/intro.htm

download this program an run it (cant be bothered to explain what it is go to URL and u will see)

Now go to this site, download the firewall and install it

-www.agnitum.com/download/outpost1.html

and lastly check for the virus and delete it on this online virus checker

-http://www3.ca.com/securityadvisor/virusinfo/scan.aspx


i would suggest you get some antivirus software Norton is a good choice, im not sure what good free software there is but i would pay the money for the protection

GOOD LUCK