rpen.exe !!!!!!!!! help!

I have been trying to get rid of this rpen.exe file for awhile now. I was told that posting a hijack this log would be my best option at getting rid of this evil file. I have deleted the registration key and everything, it keeps reinstalling itself along with other programs like ptask.exe . Please help!!

First Read: Only use these HJT-instructions when asked!
/P/ Process needs to be stopped
/U/ UNinstall anything to do with this
Transfer the text from between these dotted lines underneath to between the dotted lines of the above post.
Make sure to follow ALL instructions in SEQUENCE, and in HiJackThis tick/fix ALL lines indicated here!
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/P/U/ O4 - HKLM\..\Run: [Parallel Tasking] C:\Program Files\Parallel Tasking\ptask.exe
/P/ O4 - HKCU\..\Run: [Gsmbc] C:\WINDOWS\system32\?ttrib.exe
/P/U/ O4 - HKCU\..\Run: [Usrr] "C:\Program Files\etea\rpen.exe" -vt ndrv
O9 - Extra button: (no name) - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - (no file)
O16 - DPF: {C5E28B9D-0A68-4B50-94E9-E8F6B4697519} (NsvPlayX Control) - http://www.nullsoft.com/nsv/embed/nsvplayx_vp6_aac.cab
O20 - Winlogon Notify: style32 - C:\WINDOWS\q2136622468_disk.dll (file missing)
O23 - Service: Diskeeper - Unknown owner - C:\Program Files\Executive Software\Diskeeper\DkService.exe (file missing)
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For deletion of stubborn files after you've done the above, see this post: http://www.techspot.com/vb/topic36518.html