Vista - SD Card Reader - Corrupt Files

Hello,

Whenever I try to download pictures and video files from two different 2gig
SD cards (60x and 133x) through my onboard Ricoh card reader, on my Toshiba
Satellite 210 FS3 laptop, and all files come out corrupt. Avi video has
squiggly lines through it and the jpg pictures have distorted lines through
them. After downloading several times, I've noticed that the lines and
distortion behave differently and are in different places each time.

I've tried using a 512mb card and it seems to work fine. The 2 2gig cards
work perfectly in my HP desktop running XP when I download them directly with
its built in card reader.
If I plug in a USB cable directly from my camera to the laptops USB port,
all files download perfectly. I'm wondering if there is an issue with the SD
Card Reader Driver in Microsoft Vista?

I'm running Microsoft Vista Home Premium on my Toshiba Satelite 210 FS3 with
2gigs of Ram

Please Help
Thanks,