[TYPO3] form-based navigation

[Leon White]

hi,

i am attempting to make an efficient navigation system for a large number of
pages at piasdgserver.usp.ac.fj/peacenet. there will be two drop-down boxes,
one for the country, one for the thematic area. choose your country, choose
your thematic area, click go and the system should select the right page and
show it. thinking of it like a grid with the two selection boxes down each
side and the possible combinations in the middle as pages helps.

eventually we may (rather ambitiously) also make a flash version of the nav
with two spinning wheels.

how can i best implement this in typo3? i have coded the form and can load
it from a file, but how should i go about processing the post/get variables
on a new page? how can i make a link so that an address like
piasdgserver.usp.ac.fj/peacenet/nav.php?thematic=governance&country=&fijiwill
work?

thanks
leon