BHO help

BHO pop up.Spyware guard asks me if I want to add it and I check no but,it keeps coming back.I found the files but don't know where to go from there.Im afraid to delete as these files are dll's and app.extentions.There are a total of 3 files.
Sys32\mljgf
sys32\bifffkyk
sys32\rpxrfga

I use fire fox as advised my computer dude.IE is not my default browser.


TY Penny

 

Those files are malware/viruses/spyware. It doesn't matter if they are .dll files. Most malware these days is either a .dll file or an .exe file, with the majority being .dll files. I strongly recommend that you read this link and follow the steps. If problems persist, post in the malware forum and let the freaky anti-malware geniuses help you remove that :crap
http://forums.majorgeeks.com/showthread.php?t=35407