Ok here is the deal
you know for the WOTLK beta you are permitted to copy up to 3 characters onto your beta account right?
Ok here is what you do to get triple the gold onto your WOTLK beta test account
Step 1: TRANSFER ALL of your gold to 1 character-- doesnt matter which one
Step 2: copy character number 1 onto the beta realm
Step 3: Log back onto retail and transfer all your gold to a second character
Step 4: copy character number 2 onto the beta realm
Step 5: Transfer all your gold to a third character
Step 6: copy character number 3 onto the beta realm
YOU WILL THEN HAVE 3 characters on the beta realm-- ALL OF THEM WILL HAVE HOW EVER MUCH GOLD YOU HAD IN THE FIRST PLACE
so if you started with 1000G you will now how 1000G per character= 3000G total!
you can now transfer this all back to the original character!
ENJOY!