Ok, I asked before and it didn't exist. So I decided to make a searchable database of spells. Thanks to Sunray's excel file I got at:
http://www.freewebs.com/sunray_dom2
I exported the spells and imported them into a database you can see at:
http://www.sangster.org/dominions/grimorie.php
You can search by spell name, type, school, class, gem cost, fatigue, level, and Primary Element (which I believe is path - I just used what was in Sunray's spreadsheet). All results are sorted alphabetically. I also added a column which tells what page each spell is found on in the manual.
Note that this isn't pretty or anything, so if you're looking for a visually stimulating web site this ain't it! But if you want spells, this should work ok.
Let me know if this is of any use to anyone.
Darryl
P.S. If Illwinter is here and this violates any copyrights just say the word and I'll take the page down.