Whoa! Hang on just a second.
The file from http://126.96.36.199/linux/acx100/acx1xx.htm
doesn't look to be a driver. From the way it reads, that looks to be a firmware revision!!!
The firmware is the programed instructions that are located directly inside of the chips on the card itself. I don't think you want to mess with that unless you absolutely have to, especially sense their appear to be cards that that file will work with (the pictures on the site) and cards it will not work with, all of which have the same model number. So don't use that file unless you are willing to risk your wireless card's digital life. I could be wrong, of course, but I still wouldn't risk it just yet.
That said, you are absolutely right about the sourceforge site being very confusing as to whether or not your card is supported. They say that the driver is for the ACX100 and ACX111 chipsets, then they list your card as having a different chipset than the two they support, then they say that the GPL driver (I assume thats theirs) is confirmed to work, and finally they give you a link to the windows driver. [rant over]
Despite the confusion from the driver site, I say try the GPL driver anyway.
Here is the dl site for the GPL driver...
Your card is (supposedly) confirmed to work with driver version 0.2.0pre8pf10, but you should probably download the newest version (bottom of the list). You can always come back and get an older one, after all. There is also some information and instructions on that page. I just glanced through it a little bit, but it does look like you will need wireless tools. If you can't get ahold of a SUSE disk, I know that you can download them from that link I gave you for Wtools before (there is a download link somewhere on the page). Better yet, I assume that SUSE has a package downloader (apt-get or something like that, I never used SUSE before) that you can use to download and install the package for you, and resolve any dependencies at the same time.
Well, thats all I have for now. Hope this is pointing you in the right direction.