've been playing with PS2003 for a week or so now and i think i'm
slowly grasping it, but i can't help thinking that i'm missing
something.

Our organisation has 2 main elements:

Head Office
UK wide sites (veterinary surgeries)

So my portal site at present has 2 areas

Support Office
Practices

Support Office has a sub area for each department e.g.
Business Development | IT | Operations etc. These sub areas are
intended to provide top level information/announcements for each
dept.

Practices has a link to a specific Team Site for that practice
where each practice can store documents and information relating to
that practice.

So my question (finally) is, does this appear to be a logical and/or
suitable structure and does anyone have any alternative suggestions?

And advise would be appreciated.