looks like uv been infected with the mail worm turta.a
the legit svchost occurs only in the system folder. any other location, inclu the startup folder cud mean a posbl malware infection. sugest u go 2 ur startup folder, rt click on the file n c its (or its targets) props.
run ur av and as in safe mode. download and use 'ccleaner' to clear up residual pc junk. reboot. and the as sgstd above u can post ur hjt logfile here or get it auto-analysed at
www.hijackthis.de