Windows 7: Cardbus readyboost question

I want to speed up a old IBM Thinkpad T42, which is running on only 1GB RAM (the second DIMM port is damaged)

This computer has a CardBus port, so I'd like to get a small 2-4GB flash drive to use as a ReadyBoost drive, which should improve performance.

Anybody have any suggestions as to where to find one for not too much? I know I can find 32GB versions for $400, but those are overkill.



this would be awesome, but I can't find it: ASKA Cardbus 32 SpeedOver Review
Closer: Delkin Devices DDCFCARDBUS2-AD CardBus32 UDMA CF Adapter

This might work, but SD Class 10 is a third of the speed that I could get out of the compact flash adaptor... Amazon.com: SDHC/SD/SDIO/MMC to 32-bit High Speed CardBus PCMCIA PC Card Adapter/Reader for WIN XP/VISTA Computer. NOT for WIN 98/ME/2000/Mac/GPS/Honda/Mercedes: Everything Else