free us topo maps

[annoying crack]

I'm looking for some free US topo maps for my garmin Vista HCx. I basically only need maps for the states that the Tour divide route goes through + the Canadian portion.
What is out there and what are your experiences with them. ANY experiences would be welcome, good AND bad.
I'm not very smart with electronics  so as much info as possible would be welcome.
Oh, I'm using Mapsource and basecamp as software...

Thank you.

[6thElement]

www.gpsfiledepot.com

You'll find links for all the US states, for a free Canada Topo Map the best one is from Ibycus, see here:
http://forums.groundspeak.com/GC/index.php?s=f00e91d49b97b50fb7c4c29511f24262&showtopic=174764&view=findpost&p=4649630

You'll need a torrent client installed, like utorrent, it will take several hours to download the map while simulataneously uploading the bits you have to other downloaders.
http://www.ibycus.com/ibycustopo/IbycusTopo40.iso.torrent

[annoying crack]

Thank you for the reply. 
I just downloaded a Montana map from www.gpsfiledepot.com and it seems to have worked out fine. Wyoming, Colorado and New Mexico are up next. Gpsfiledepot directed me to the following site: http://www.miscjunk.org/mj/mp_wytopo.html and they have maps of all the states I need. I took a quick look on the Montana map and it's detailed enough for TDR I guess.

I have to admit that you totally lost me with the following though:

[You'll need a torrent client installed, like utorrent, it will take several hours to download the map while simulataneously uploading the bits you have to other downloaders.
http://www.ibycus.com/ibycustopo/IbycusTopo40.iso.torrent

Don't worry about it though, I'll see if I can find a map of that little bit between Banff and the border and come back on that later.