Converting to Drupal

Hi! I´m new with Drupal, I have download and install a copy of Drupal 4.6 without major problems and put some static pages has page node type, etc.
But I want to go one step further... I´m planning to develop an Intranet for my job.
Such Intranet will consist basically of an Inventory database and the functions needed to manage them. I need to print reports, do querys, modify/add items, update a change log, etc.

I just learnt about drupal (about a month). Ive been playing around with it and it has been working marvelously. I understand how to create a drupal site from scratch BUT, I already have a site entirely in php and I cant figure out how to get all that bulk (about 30 files to work with drupal)
this is the url: http://rohsmi.madpage.com usr: "19" pass:"123"
I really dont know where to start.

I am planning to convert a community Mambo site to Drupal, but since there are no existing mambo->drupal migration scripts (at least not shared here.. contact me if you want to share!), I think it would be a bit of an overkill for me to write a migration script since this is probably a one time effort.

Last night i got drupal set up ok and what not,

now im down to the actual website set up and pages,

how do i get directories to be recognized.

like for example i have my homepage which is http://www.zmwilliams.com , ok so i want some subnavigation links for that page, and then for every other page on my website i want a subnavagation part,

I'm trying to disable the login boxes on my site except for the separate login page and all the pages once you are logged in. I've tried a few things, but nothing will work. Any suggestions?

David

Hi, I just moved drupal from a sub-domain to its real domain(www.mashband.org) and on some computers, the old site shows up, on some the new site shows up w/out the pics, and the links are screwed up. Any ideas what I did wrong? Is it wrong to move Drupal around?

David