Here, try this one out: You have to download orinoco-0.15rc2.tar.gz (I think that's the one), untar it, go to the directory it makes, run "make" (no quotes), then gzip the .ko files it makes, su to root, and copy and paste those .ko files (now .ko.gz files) in your /lib/modules subtree (usually /lib/modules/(kernel version)/kernel/drivers/net/wireless).
Then, when you reboot (the safest way to figure it out) you should be running the 0.15rc2 version, which DOES support scanning! AND you dont have to go through the hassle of messing with pcmcia_cs!
And yes, it does require that you have the kernel sources in place, but once you get that, try this method, it worked for me!
Hope that was a bit helpful