Expanding Wireless Router Range

My church is wanting to set up a wireless network. They have a cable modem (with wireless G built in) at their house which is right by the church. The signal reaches through part of the property but not too the offices. I've read a little bit about using a range extender but it sounds like we would be losing alot of bandwidth. I also read about using another router as an access point but I'm not real sure how that works. Is it possible to just put another router in the church (that is in the range of the other) that will allow us to access the internet from the offices? It is not really practical to wire anything from the house to the church so it would have to be wirelessly. Any suggestions would be appreciated. Thanks.

One router I was looking at was this: http://kb.netgear.com/app/products/model/a_id/2613
I looked at the setup guide and I didn't know if it is setup to recieve the wireless signal and broadcast it at the same time. (if that makes any sense).

receiving and retransmitting is repeating. one box can't do both, so it's

receive
store
retransmit

over and over. that's where the bandwidth loss comes from.

I:

receive from a network in the town square,
retransmit on a separate device,
simultaneously.

this is slow, too. that is partially due to the distance and the obstructions in the way.

a network device that receives from an access point and has a wired network outlet is a bridge.

I use Linksys WRT54Gs with DD-WRT firmware as both APs and bridges. Not a plug and play solution, bit of a learning curve.

http://www.wirelessforums.org/how-to...dge-53364.html

Thanks for the reply.
So pretty much the only options are to buy a range extender (and deal with the slower bandwidth) or buy 2 devices (one as a bridge and then wire it to another router). Did I understand that right? When it comes to networking, my knowledge is somewhat limited. But with some time I can figure it out. Thanks again for the help.