Microsoft Office Live Small Business Community

I have my prefered domain hosted elsewhere. I would like to use the Office Live Small Business for my Email and a website, but Not for all of my websites. So I would like to be able to redirect my MX record and a host on my DNS say live.mydomain.net. Is there a way to do this, or is all or all web, or...

Hello, I'm trying to figure things out. I signed up for an Ofc Live account with an e-mail account provided by my ISP (gvtc). Today I was able to redirect my existing web site. Got comfirmations messages. Now it seem like I have 2 Ofc Live accounts and 2 Space accounts. Would someone offer some advice...