Antec Titan Question

[ND40oz]

I just bought an Antec Titan in anticipation of someone who went to the amd tech tour selling me their opteron bundle at a price close to what they paid for it. Either way, I'll be using it for the time being with my current AD/File/Print server. I'm getting tired of looking at the beige box that its been in for the past 7 years.

My question is, am I going to have any problems with this Tyan Tiger board in that case with the Antec 550 powersupply? Or do I need to switch out for a non-dual rail power supply?

Thanks.

Edit: Here's a link to the case: Antec Titan