I just answered this in your build update post...
But I will recommend a dremel as it seems to be onenof the most handy tools you can own.... dremel clones from places like northern or harbor freight will also do the trick... and definitely save you a ton on dremel tips.
lots of us have some good ebay links for the good carbide rotary files for the dremels too.... don't buy the dremel brand tips, they're really nice but big time overpriced compared to harbor freight or ebay
MadMaxed- I started a thread on the minimum tools required- maybe that'll help. But that is not about the tools you should have, just what you HAVE to have.
http://motorbicycling.com/showthread.php?t=58195
There are other conversations on this as well, just use the search bar up top.
Being specific with the search is critical to finding what you're looking for instead of pages of discussion containing a singel keyword.
Tom