you can root ur phone here
How-to- Root, Hack, and Flashing your G1/Dream Read first!! - xda-developers
u will need to format ur sd card into 2 partitions following this guide
format sd card with paragon partition manager | NitroPR
then u can move all ur apps 2 sdcard by installing this with appinstaller from market
run this and ur done
Apps to SD card app - xda-developers