Me thinks you have Spyware running.....converted all your exe files to com files . When Norton went down your Kernal protocols no longer can find the exe's for your software. I would suggest you do a windows repair from Cdrom boot and then install Norton.
Noli Nothis Permittere Te Terere!!
EVGA 680i, Dual EVGA 8800GT'S (650/950), 4 gigs OCZ DDR2 1066, Intel Q9450 at 3.8 Ghz, Koolance Water Cooled, Dual Plextor16x DL DVD+/-RW. Dual WD 250gb 16mb Cache Sata 3.0. 3DMark06 score = 19,168.