Overview:
eUniverse.PerfectNav is an error page hijacker. This system is known to download and install additional packages which you don't want. If you have this then you likely have a number of other things you'll need to remove.

End Processes (may or may not exist):
default.exe
keenvalue.exe
killkeenvalue.exe
kwm.exe
perfectnavuninstall.exe
senduninstallinfo.exe
sui.exe
tipb.exe
wupdater.exe

Unregister DLLs:
Tip: this is only a list of known files/locations. You will want to do a search by the name of the file to see if they're on your system.
A while back I wrote a guide to Register/remove DLL or AX files which you will need if you don't know how to unregister these files.

Each file is in several locations so you'll need to search for them and unregister + delete them in every location you find.

kvlhookwin.dll
perfectnav.dll
perfectnav150c.dll
perfectnav150.dll
perfectnavbho.dll

Remove Directories:
Progam Files\bho
Program Files\perfec~1\bho
Program Files\perfectnav

Clean your Registry:

You should be back to normal IF this was your only problem. I suggest you post in our HJT forum since its not likely that this is your only bug. Read this first