I wouldn't recommend computer avenue at all. IMO, Designer Graphics
www.dgraphics.mb.ca is THE place to buy hardware in the 'peg.
For stuff Chris (at DG) doesn't carry, I usually go with mail order. I just ordered an Alpha PAL6035 and some Arctic Silver from
www.bigfootcomputers.com -- they seem to have a good rep, although they're being a bit slow to answer my emails at the moment.
For case fans, if you want quiet fans, get Panaflo's from
www.teamawe.com -- Joe will ship them USPS and mark the price as less than $20 so you won't get hit with duty. Great guy.
If you want to unlock a TBird with something more permanent/more conductive than a pencil, Active Electronics up on Route 90 carries Chemtronics conductive pens...but they're pricey. (Picked one up today for $21 CDN after tax...ouch.)