Well, if you have an Athlon 64 system and downloaded the iso images for X_64, then you have a 64 bit installation.
If you downloaded the regular i386 images (eg; SUSE-10.0-CD-i386-GM-CD1.iso....) then you do not.
If you are using the ndiswrapper package that came with SuSE (you installed it through Yast), often the drivers that came with the disk do not work as expected, or if your driver disk has drivers for multiple versions of your card, make sure that you picked the correct drivers for ndiswrapper.
But either you use ndiswrapper or the (hopefully) native Prism drivers via Yast.
When you attempted to use Yast to configure the card, at the Network installation interface, did you choose "wireless" from the dropdown box and check off the box for pcmcia?
What card did you tell SuSE that you had?
Just to make sure as you go along, you are sure that the router has no ESSID name or passphrase?
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"I love it when a plan comes together." - Hannibal Smith