Networks Best wifi router for bridging to an existing wifi network?

A friend has an existing 802.11g ADSL modem router and is willing to share his broadband line with me.

I'm looking for a wifi router that can connect to my friend's existing network wirelessly as a client and provide web access to my machines, which I plan on connecting via wired ethernet.

My machines must be behind their own NAT subnet; the only link to my friend's network would be to use the ADSL line for internet connectivity, he shouldn't be able to see any of my machines on his network save for my router itself.

Would something like the following work: www.ebuyer.com/product/143115 or www.ebuyer.com/product/46057 ?

Both show "bridging" and "repeating" as part of their features but I need to be sure that this means the type of bridging I'm after...

 

Linksys wrt54g with dd-wrt.

 

I've always found netgear stuff to be very good - although the WRT54G as above will do a lot of jobs if you're likely to end up using your own internets.