Sibling/parent cache setup for load balancing

I have a problem that i hope squid can solve for me.

I have 2 distinct internet feeds from two sites that hae a link betewwn
them. eg.

Site A has a 64K to Internet
Site B has a 64K to Internet
Site A has a 64K to Site B

If a user at site A has a http request, I would like the proxy used to
cycle to the lowest usage link, or in the worst case, the next in the
list link.

ie, I would like the client to request a document from Site A proxy,
then Site B proxy then Site A Proxy etc... I looked at multiple A
records in the dns for a proxy but netscape only resolves the name once
and keeps the address.

I thought maybe a two level squid cache which has multiple A records for
a parent might do the trick ?

Any help would be appreciated.

Regards
Kevin Withnall

-- 
Kevin Withnall  - B Comp Sci, Master CNE,  MCSE
ILB Computing Pty. Ltd. Phone: +61 42 261305 Fax:+61 2 95122714
Email:kevin@withnall.com   http://kevin.withnall.com