MemPlug SD/MMC for Springboard Moldule for Handspring

Would anyone happen to be aware of a place that still carries has of these somewhere? It's the springboard module that lets the Visor accept SD/MMC cards like the Palm PDA's do.

I know this is a little bit low-tech compared to what's available now, but I'm not quite prepared for the jump to a true handheld PC. Plus, I like the fact that the Visor has an excellent run-time between recharges.

I'm looking for the MemPlug because: 1) it comes with the software I would need to use the palm to run things from the SD/MMC card. 2) It uses less power to run the SD/MMC than it would if I did the CF/PCMCIA hardware hack.

I'd appreciate any help that I can get on this one. Thanks.