Folks - search please.
The 2 GB card issue and the question of "can I install the Rogers or O2 o/s on my T-Mobile Pearl" have been asked and answered numerous (and I mean numerous) times.
Version .51 of the o/s and above supports 2 GB cards.
Yes, you can install the Rogers or O2 o/s on your T-Mobile Pearl. Download the o/s upgrade, run the install, delete the vendor.xml file, connect your Berry, start Desktop Manager, and then go into Application Loader to start the install process.