WLAN extension between buildings

Question

Ladies & Gentlemen,
I would appreciate possible help with my project as illustrated in the attachment.
I have 2 commercial blgs and a "home office" bldg, as described below:
BLDG A - Home office with internet access (Satellite) and WRT54G wireless router with optional, better antennas. This office has a desktop and a wirelessly connected laptop (in a Windows wireless network labeled "Office1"). OS: Windows XP.
BLDG B - "Bed and Breakfast Inn" with current wireless access to the WRT54G router for Guests (service offered to Guests on a convenience/reasonable usage basis)
BLDG C - Retail Store with a Main Office Computer (Windows 2000 Pro) with its own wired LAN connection to several point of sale (POS) computers/workstations.
All 3 buildings are located in a triangular pattern, about 150 ft from each other - clear line of sight
- Bridge or otherwise wirelessly link BLDGS A and C to allow the Internet connection in BLDG A to be available to BLDG C (BLDG C also does Money Wiring, and other services over the internet - it only has a dialup connection for now - No DSL in our town!)
- Possibility to have Main Office VComputer in BLDG C able to access Internet via BLDG A, while remaining in its own wired LAN with the POS computers - LAN labeled "Office1"
- Is this possible? Can indeed Main Office Computer in BLDG C be "on two different networks" (note: the POS computers in BLDG C do not have to have access to the Internet. Would Main Office Computer in BLDG C have to have two NICs?
- Anything else?
- I so far understand that a pair of WAP54G could be set up as bridges between BLDGs A and C. I am confused about how to make Main Office Computer in BLDG connect to the Internet via Home Office Computer in BLDG A.
Thanks for ANY help!

Answer 1

so you opened the bt socket and added wires to the terminals or just got a plugin type extension?
do you have anything (other than the extension plugged into the bt socket?
is it just he bb or the bb and the phone plugged into the extension?
ok i'll asume for now that you went to argos or homebase and bought the 10 quid extension kit, which has a plug for the bt socket and a wire which you then connect to the back of the new surface mountalbe phone box.
at the bt socket you have the bb filter and into that you have the extension and then phone connected, the phone works but bb doesnt,
failing that you have connected the extension line to the bt socket along with the phone, and plugged the filter into the other end of hte extension with the phone,
either of those senarios the problem is easy, you need to plug the extension into the bt socket, plug the bb filter into the back of it then phone etc, on the other end of the extension you need another filter, and into this you need to plug in the modem cable
hope that makes sense to you