editing the spellcheck dictionary?

First, the 1.3 upgrade is gorgeous, thank you all for your tremendous effort!

I was wondering if there’s a way to edit the spellcheck dictionary file. It turns out that one of the words I had clicked “Learn Spelling” on was misspelled, and I’d like to be able to remove the incorrect version from the dictionary.

I did notice that all the words I had clicked “Learn Spelling” on reverted to unknowns after I installed the 1.3 upgrade, so if the next upgrade reverts them again that will certainly fix it, but I wondered if there were a handy dictionary file somewhere that I could go in and tweak.

I’m running Windows Vista (32 bit).

Many thanks!