It looks like it could just be a typeface.

If you screenshot the website, and cut out the logo and then submit it to http://new.myfonts.com/WhatTheFont/ you may be able to find out what it is.

Alternativly, I'm with chaka, vector would defiantly be the best way round it.

If you've got any experience with the pen tool in Adobe Photoshop you'll be able to re-make it in Adobe Illustrator as a vector. This will give you the ability to resize the logo as much as you like without any distortion.

Below is a few links to Pen Tool tutorials:
http://vector.tutsplus.com/tutorials...hensive-guide/
http://graphicdesign.about.com/od/il.../ss/ai_pen.htm

Hope this helps,
Adam