Unknown processes in WinXP Task Manager

My computer slows down to a halt shortly after I connect to the Internet. This is too irritating for me. Tinkering about, I found these processes running:

• 4.exe
• bltb.exe
• dooai.exe
• nvsvc32.exe
• nzgxtxtl.exe
• ogqpoxm.exe
• rkiggyl.exe
• trvy.exe
• vedstt.exe

Too bad I can't research on this now. My PC is just too damn slow. I'll work on this tomorrow in the office; the laptop is connected to a T1 line so it should be a lot faster than this one.

Windows XP