A friend turned her pc on to find that all her program files had gone - IE6 included. I brought it over to my house, formatted the drive, re-installed Win98 and plugged it into my router (Bigpond cable). On start up I'd get a msg saying something about an vbix file not being found. So I thought I'd upgrade to WinMe thinking that missing file would be re-installed. About 10% into setup of WinME it stopped with an error msg SU0325. Checked this on google and found a MS KB article about it being possibly a virus or trojan but most likely a damaged or dirty cd. I shut the pc down and intended leaving it for another day. Now the CD is scratched a fair bit BUT about 1/2 hour later up pops an alert on my pc's screen VET has discovered a resident virus NetSky. My question is if my friend's pc WAS infected could it have passed through to my pc through the router? Also, assuming it was a virus that caused all the program files to go missing, does a re-format not fix this, or is a new hard drive required or what? It's not possible to connect to the net to get a removal tool. Also when I did have Win98 running on my friend's pc I typed cmd in "run" and it wouldn't run dos but would re-start in DOS mode. Sorry for the long post. Any help would be appreciated.