Telescope Reviews: t-rings and all that!

I have just recieved my Canon 450d (Rebel STi) and now need the bits 'an' bobs to connect it to my 'scopes.

I have two questions I'd like help with please:
1. this regards my LX90 10". I have a large adapter bitty, one end fits perfectly into my meade electric focuser, and the other end looks like it would fit into a T-ring on the canon...does this sound sensible?

2. this question is aimed at my ETX 90: from what I can gather I need the Meade T64 adapter to fasten on the rear of the ETX....I understand that bit but,in the pictures I've seen it looks to be around 1.25"...do I need some other adapter to fit it onto the T-ring?

Thanks in advance
mike