Hi,
First of all, IMHO since you are relativly new to linux, you shouldn't start with a minimal dist. I think that you would have a much better experiance from a "normal" dist such as Fedora, OpenSuse, Ubuntu, Mandriva, etc.
These dists have a much wider array of drivers/software avalible in their repos which should make it easier to install hardware.
Now to you problem...
I don't really know how well usb-network cards are supported but i guess a real pci-card is better.
Do you see the card at all? if you type, in console,
tail -F /var/log/message
then you plugin the device, what does it say???
If you get any info here this could help you in your search for proper drivers.