1. happy birthday.

2. try this: [Addon] Jamba - An assistant for multiboxers. 10th Update - 0.4b released.

3. try to get another account. if you get noted as boxing with two accounts, one of which is not under your name, both accounts can be banned.

4. your computer seems fine to run two or three WoW's at once. do make individual folders for each wow account you launch, as this will make it easier to customize each one. you will want your slave account with low settings while your main should have medium/high settings. also keep the addons on your slaves minimal. i only have Jamba, bagnon, carbonite and macaroon on my slaves.

ok have fun. and with shamans, they rock. two of anything rocks. by the time you're on your second or third team, try a mix group and see how you like it.