Nice site!!! I liked registering because i got to enter my computer specs even though I didn't know the motherboard or the cooling (can't find it anywhere...) I don't see why you don't just update your URL to direct directly to the new server address. Sure it will take 1 to 3 days for the server to update to the new server address, but in that time, it will still do the old one, so people can still visit your site!
To find out who made your motherboard you can download a diagnostic program. Like SiSoftware Sandra 2002, just go here.