Tax Liability Account

I've been using MS money for years now, but have just set up my own business and want to use it for that.  I've set up everything and it looks like it will do what I need, but the one issue I have is when I make a sale, the Sales Tax transaction is entered into the wrong account (I probably told Money which account to enter it from at some point).

I can't change the transaction directly, so how do I configure the Tax Liability Account so the transaction is entered into another account?

Thanks