Roger,

Check out http://cddb.com, I found Solar Plexus on Renaissance, it's apparently by Solar Plexus If it's Renaissance by Sasha & Digweed... there are plenty of Renaissances listed, so I hope all yours are in there!

http://cddb.com/xm/pcd/gentrance/135c2ee744590376adc04822ef623046.html

For example, here's House Collection:

http://cddb.com/xm/pcd/genunclassifiable/06d871a334b2e7c98f9ac45f7349ffb0.html

Hope you find all the tracks, I know how annoying it can be to not have that info at hand.

Cheers,
Richard