It appears that pspv.exe is a component or part of Nirsoft tools.

To remove this, use Add/Remove Programs and look for Nirsoft Tools or use removal using:
http://www.emsisoft.com/en/software/download/
Get from the above link A-squared Free (free scanner and removal)
The discussion in their forum http://forum.emsisoft.com/Default.aspx?g=posts&t=167 shows a-squared will detect and remove it.

Other scanner that can detect it: http://virscan.org/report/bbebf41f1c2fbc9d312f37a8be034758.html

Or scan using Housecall to remove the infection:
http://www.trendsecure.com/portal/en-US/tools/security_tools/housecall