Software: Create Intranet Page from other Web Pages?

[Ruth Lundquist <rlundquist -at- prosarcorp -dot- com>]

I don't mean to get too detailed, but you need a little background:
We provide telephone-based medical care and health information to the consumers 
of our clients' products.
We have hundreds of clients who manufacture and sell hundreds of thousands of 
products (things like insecticide, toothpaste, paint, flea&tick powder, 
pharmaceuticals, etc.)
Most of our clients have detailed health & safety product information available 
on their web sites.
Our medical staff needs access to this information to properly handle the 
consumers' calls.
Rather than recreate/copy that information into our internal systems, as we 
have historically done, we'd like to simply create a "portal" whereby we can 
access our clients' web pages. It can be as simple as a drop down list or 
hyperlink list where we can choose the customer & go to the proper location on 
their web site.
Our customers fully support this idea.
We don't want to manually manage a list of hyperlinks, however.

Is there software that will allow us to manage web content when that content is 
actually links to other web sites?

(This is probably tremendously obvious, but I just can't see it.)

Thanks!