The 16-bit subsystem message can persist even once you've deleted the spyware. It has to do with a couple of files (autoexec.nt being the one I can name off the top of my head) that get deleted...you have to manually put them back, but I'm not sure exactly how you go about doing that.
Irfanview is a freeware image viewer/converter.
www.irfanview.com