Cant use multiple accounts under same IP?

[Thevolcanodude]

I'm trying to set my girlfriend up with an account so we can play together, and when trying to login on both accounts at the same time, i'm getting a message saying that the IP address is temporarily blocked. She lives with me, and is playing on a computer sharing the same Wireless Lan... Is there anyway around this? Tried making a new forums page account with new game account but that didn't make a difference.