I might be taking a business trip to Calgary (from PHX) in a few weeks and was wondering what lounges are available to use.

On the web site I saw Air Canada's Maple Leaf Lounge which looks like a Star Alliance Lounge. Can I use it w/o any fees?

My info:
1. Star Gold
2. US Airways Lounge Membership

I'm guessing item 1 would do it? At this point I'm not sure what airline I will be flying (hopefully US Airways but unless prices are close it is out of my control).

The lounge is in Concourse A. Any idea what gates US Airways uses?
Any useful tips on customs, etc. in YYC?

Thanks.