one other quesiton on the Multiple Monitor plan...

Thanks to those who responded to my last post, your info was helpful,
thanks, but if I had a dual card, would my Dell receipt say that?
Mine doesn't, so I am thinking I need another card. Am I wrong there?
Here is what it says for my card:

128MB PCI Express x16 (DVI/VGA/TV-out) ATI Radeon X300 SE

I am hoping I have a dual card so I don't have to buy another one
(this is a surprise for my husband). Could you possibly tell me from
that info above if I can just get an adapter or something? I had read
sometimes all you need is a DVI-VGA adapter, whatever that is. I
bought an additional monitor (StarLogic) from OfficeMax if that helps
to know.

I need to get this second monito hooked up ASAP (aka I don't have time
to order a card from Dell and wait for it to arrive), plus I am trying
to keep the cost as low as possible.

I just really need to know if I can walk into a store (like a Best Buy
or somewhere) and pick up a card (or the adapter) today. If so, what
am I looking for and about how much will this run me? What am I
looking for? Just a basic card that can work with a Dell and an extra
"Starlogic" monitor?

I called Dell and the rep told me I'd need to buy a "dual" card. Does
this mean I will take out my old card and just have ONE new card in?
So I won't just buy an "additional" card and have two cards in the
Dell then? He said it would be about $200. Owch! I thought buying
an additional monitor (cheap, I got one for about $80) wouldn't be
this much money. Now another $200 for a card? Yikes.

Any advice would be greatly appreciated.