Domain mapping: 301 Redirect for second domain going to network and not mapped domain

Hi,

I've got the Domain mapping plugin to work fine by mapping the domain name http://29glasgow.co.uk to http://network.lynnetleisure.com/29

However, I now need to set up a 301 redirect from our secondary domain name http://29glasgow.com to http://29glasgow.co.uk

Everything looks fine in the cPanel, but when we type 29glasgow.com into the web browser it redirects to the top level URL for the whole network (http://network.lynnetleisure.com - which doesn't have anything on it at the moment).

How do I get the .com to redirect to the right place?

If someone could get back to me about this quickly you would be totally saving my ass