Okay, so I have a question regarding creating a dedicated server: I have an XBL account already set up that I use to play H2X on occasion, and from what I've gathered, it is only possible to set up a dedicated server through Gold Accounts. Am I correct in thinking that I can use my XBL account as a Gold Account on GFWL? Next, I basically have little to no idea of how dedicated servers work, or custom games with H2V, because I haven't gotten my new laptop and haven't played H2V yet. If I host a game with my Gold Account, can I play in it? If I create a dedicated server, will I be able to play in it with the same account that has created the server? If not, is it possible to be signed into GFWL with two accounts at the same time?
(e.g. I create the server with the Gold Account, but use a silver one to play) And, lastly, if any of this is possible, would a laptop with the following specs be able to do it?

Inspiron 9400, Intel Core Duo processor T2350 (2MB/1.86GHz/533MHz)
2GB, DDR2, 533MHz 2 Dimm
256MB NVIDIA GeForce Go 7900 GS
120GB 5400RPM SATA Hard Drive
Windows Vista Ultimate

Sorry if I have no idea what I'm talking about