Firefox virus - help

[SexyGreyFox]

Okay, I'm exaggerating a bit but its driving me nuts.
I usually fix peoples problems but this one has got me over the last 3 days.
Even Google only comes up with about 5 references and 4 of them are German.
I've been through my Startup files, been through my Registry and looked for suspicious entries in task Manager but I can't see anything obvious.

My problem -
I load Firefox and then all of a sudden it connects to http://67.205.95.105/ and brings up various web pages in another Firefox browser.

Any ideas?

 

[SexyGreyFox]

Apologies for not replying earlier and I have been trying above suggestions.
Like I said, for the last 20 years I've been a bit of an 'expert' with the Registry and always fix other peoples problems but this got me stumped.
Anyway, things were happening concerning NOD and hopefully everything is OK now.
Heres a screen grab of at least one item that may have been responsible.
I'd normally type each file name into google but I can't be bothered at the moment.

BTW, for those who like messing with the Registry and other System files the best program I've ver come across is JV16.