I've got an edimax en-9130tx* card, in a dell dimension 4500 running suse 9.1 personal (among other things).
When I booted up, suse saw the new card, recognised it as a 'realtek' and installed it.
It's plugged into a BT Voyager 1500, and that's getting plugged into telewest next week.
Until then, there's only the voyager & an xp laptop to talk to.

I didn't use the supplied floppy, because the suse built-in stuff appears ok.
should I ? or might it break it ?

Only trouble is, according to the bt voyager, it's running at 10Mb rather than 100Mb.
Any suggestions how to switch it up ? Should I care ?

The packet flow will run at the rate of the lowest hardware setting in YOUR networking configuration. The "bottleneck", so to speak. Check YOUR hardware and see if YOUR running half-duplex or full-duplex in YOUR Ethernet settings for the PCI Ethernet Device/motherboard ethernet chipset . Does YOUR Distro have "Ethtool" and/or "man ethtool" installed on the system? This program is highly configurable.

Is there any way to configure it through the system configuration files?