I'm working on a couple Visual Studio project wizards and have been looking all over the place for a list of VSZ parameters. Well, I finally found the list here: http://msdn.microsoft.com/library/en-us/vccore/html/vclrfpredefinedcustomwizardsymbols.asp. Just figured I'd post it here in case anyone else was looking for it or I needed it again in the future.
One side note, however: VS05 wizards are a LOT easier to create and manage. I'm definitely looking forward to those. They're require a complete change of current wizards, but it should be well worth it.