Post installation

I'm sure someone has already asked this question but I can't find it. My apologies if I missed it.

I've just installed drupal-4.6.3 and everything looks good.

Using the SEARCH box/button, however, returns "The requested URL /search was not found on this server." The web address box displays 'http://www.mysite.org/search' (note that it doesn't use the '?q=').

I've installed URL filter and Tiny MCE. I feel like at one point, my URL filter was working and posts would automatically have links. Now, tho, if someone puts in an url, it just shows up as text instead of a link. The whole bit of "link" "unlink" via the tiny MCE interface is causing some users difficulty. Any advice on how to make it automatic? Thanks!

dot tar files give me the creeps.
why don't people make plain .zip files familiar to everybody.
i want to install a personal messenger. how can i get it in .zip form?

I am using an include function to display real estate listings on my site and I have pages that work fine outside of drupal, but when I include them they lose all functionality. I'm sure it's something simple.... i'm still pretty new at this programming bit ;)

You can see the list that is working here: http://sanluisrealtor.studiocreek.com/real_estate_test.php?City=san%20lu...

Here's my dilemma, that seems pretty easy.. but none of the modules I've installed are able to do it just right.

I'm creating an online portfolio. I want to have a hierarchy like so Current Content > Website > Single Pages > Reviews

Other things (such as "news") will also be under the "single pages" heading.

When the person is at the "Review" page a FULL list of a preview of all the items is shown, complete with an optional screenshot, title, and description.

Getting this warning on every page of my site.

warning: implode() [function.implode]: Bad arguments. in /export/var/www/nealaddy/htdocs/modules/gallery.module on line 190.

This is a fresh, new install of drupal, G2, etc. Versions in use are as follows:

drupal-4.6.3
gallery-2.0.1
gallery-4.6.0 (gallery.module)
g2-module-imageblock-0.9.7
php-5.0.5-r4
mysql-5.0.15
apache-2.0.55
Gentoo Linux