VP.DLL is from InfoPen. By cleaning out the registry you also broke those links needed for InfoPen...
Also, do you have StuffPlug-NG? There is an issue between InfoPen and StuffPlug (unless TB has fixed it in the new release, I dunno about that). Make sure you have installed the latest StuffPlug version:
http://shoutbox.menthix.net/showthread.php?tid=30009
Now, to fix the errors: uninstall InfoPen completely:
add/remove programs > InfoPen
Then install the handwriting plugin instead if you wish to be able to "handwrite". You can download the complete package here:
http://downloads.mess.be/SLim_Shady/downloads/msn...g(www.mess.be).zip
Read the instructions first though:
http://shoutbox.menthix.net/showthread.php?tid=22276
If all this is done, the problem should be fixed (and the VP.DLL-error should be gone also)...