
Hey Sir Trews,
My guess would be a malware infection. Your Config.sys file gives basic commands to the computer.
Why don't you download Spy Sweeper from my signature, open PreWork, and donwload CCleaner, and HijackThis.
Run CCleaner according to the instructions, then run a full system scan with Spy Sweeper, save and post the log back here along with the log from HijackThis.
Looking forward to your reply,
TTFN
LGW