Hello 'paintingartz',
Is it in any way possible for you to get a picture of the signature? Either by photographing it, or laying the painting
flat on a scanner and getting it that way?
If you can do this, you might find some luck with the American ebay's "Collectibles and Art" board. Even if no one
there recognizes the signature, someone may be able to suggest a further avenue of inquiry.
Try it here:
http://community.ebay.com/t5/Collectibles-Art/bd-p/29
Good luck. 
