Vista - Upgrade Home Premium to Business

Have bought a HP comp with Vista Home Premium "pre-installed". I think I
asked the questions, but my wording were probably not "IT-ish" enough.
So, now I have a computer with Vista Home Premium that cannot be connected
to my LAN domain.
Can I buy an upgrade to get Vista Business (or whatever I must have)?
Sorry to say Microsoft site isn't very clear on "Networking". I fail to see
if they're talking about peer-to-peer, domain or plain Internet access.

The only upgrade option for Home Premium is to Ultimate, which has
everything that all versions of Vista have (excluding Enterprise version).


"Ton Hamil" <TonHamil@xxxxxx> wrote in message
news:0390591D-C69D-41CE-9652-68C226EB640E@xxxxxx