[CentOS] Multiple WAN link -- CentOS Suitability

My situation:

I have a cable modem (COMCAST 6Mbit d/l) and am about to also have DSL
(Verizon 3 Mbit d/l).  I was thinking of using CentOS (4.4, 4.5, or 5??) as
a router/dhcp server/firewall for my home network consisting of 3 to 6
computers at any given time.  I seek the wisdom of the members of this list
on the following issues:

 

--  Is CENTOS a good direction to go?  I do not mind manually configuring
things or installing lots of packages, and am doing this as both a learning
experience for myself and proof of concept for a customer.

--  Is it possible/hard/easy/trivial to share the load between the two
connections?  Have either link fail and things still work correctly?

--  I plan to build a box for this job - looking for general recommendations
of how much horsepower (mem/disk space, etc) is required

--  What are the implications of two pipes for incoming connections such as
DynDNS based  remote desktop or VNC, or web server, FTP, etc

 

The basic hardware layout I see is 3 nics, 1 GB RAM, 60 GB disk space.  1
NIC for each WAN port, 1 NIC for my local net, some recent CPU.

 

I have been browsing through the "Linux Advanced Routing & Traffic Control
HOWTO," but am still not on top of how to get done what I'm looking for.  I
understand that there are probably products that I could buy to do this, but
my preference is to do it myself.

 

Sorry if my questions are too basic.  Please feel free to tell me off if so.
Thanks.

 

rsubasic

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