No idea if this is still going (the website is, so very possibly!).... but many moons ago was once part of a group called Westmans First Choice that was along the lines of what I think you're looking for:
http://www.westmansfirstchoice.ca
If it is going I'm sure it's changed a lot, but a lot of great memories of connections made that were an important part of my striking out into the business world....