Hello. I'm Tia. Trying to get setup with a few pc's to start mining Btc... Having a little bit of a hard time understanding which bitcoin-qt wallet code to use for the mining parameter of account name. Do I use the one that is listed for receiving bitcoins? Do I use the one listed in the Address book? Can't seem to find an answer to this.
Unless if I'm misunderstanding, you're trying to set up a mining tool. What tool are you trying to set up to mine with? Unless if you have special hardware, I believe it's recommended that you mine for a pool, probably using guiMiner and poclbm. I don't believe you're looking for the one listed in address book, unless if you're referring to setting up a pool's payout address. I personally use deepbit.net, but the most popular one according to http://bitcoincharts.com/bitcoin/ is BTC Guild. You should be able to find more detailed instructions on how to set up a miner w/ the pool on those sites.
I hope I didn't make too many assumptions, and that you figure it out xD