I use the tci@home network it runs only 40 dollar a month unlimited use, that sound pretty pricey down there, dont be downloading big progs, megs add up fast. Also to the card thing I have a 3com 10base Pci IV, but they say speed is limit to the card so I get average 50kb/s and reg site but like cnet or microsoft or game sites I can get 500kb, so I figure if you go a 100base ether then you would 10x time the speed but then the cable company would like oo much. check these out
http://www.cox.com/highSpeed/modemfaq.html
http://calgary.shaw.wave.ca/