Newbie Ethernet to wireless setup questions(s)

[DAve Jenkins]

I have a computer set up in our main house with a wired network in a number of rooms, and 2 wireless access points installed. I want to install a computer in a small guest house that's about 15' from the main house. I need guidance on how/what to install to give the new computer access to the network in the main house, which accesses the Internet through a router and then on to a wireless broadband ISP.

If I undertand what I've read here, I need to install an Ethernet-wireless bridge in the little house - would that be correct? Is this a bear to do? Also, since the WAP in the big house is behind a brick wall, I'm thinking that a standard wireless signal from within the little house may not get through. Is it possible to get a bridge that allows the attachment of an external antenna, which I could mount on the exterior wall of the little house?

I really need to know if I'm on the right track, here. If so, are there recommendations somewhere for a particular bridge device? What about the external antenna, if I need one - what do I need to specify if I have to go that route?

Thanks for your input, help, and guidance!

[DAve Jenkins]

I've been doing some looking around, and see "USB Wireless Adapters" (Linksys) which also look like they'll solve my application problems, since I really don't have any requirement for an ethernet network in my little house. Am I correct in construing that?

I still feel like I'll need something with a removable antenna, so that I can attach a high-gain antenna, if need be. However, I don't think the Linksys adapter has a removable antenna, does it?

Anyway, I'd also like to get some feedback on using that device, since it's quite a bit cheaper than the bridge device.

Thanks!