Installing Drupal

I have made some lucky installation of drupal earlyer, but now I have the big problem that a web-hotel that I got hawe made the bright thing to have a @ in the username for my mySQL account. I have checked that there is no problem whith this exept in drupal (or some other also). I got the same al the time

Can't connect to MySQL server on 'localhost' (10061)

HELP! What can I do, change some php-files or?????

I have just completed step 4 of installing Drupal 4.3.2. Upon executing step 5 (accessing the site for the first time) I get the following error:

$db_url = "mysql://drupal:
@localhost/drupal"; $base_url = "http://theclanmcrae.no-ip.org"; Database problem: DB Error: not found

For some reason, I cannot upload images that have been edited by Mac Photoshop. Does anyone know why this might be happening? The images are jpegs, and within the size limits of the rules. Does it have something to do with the encoding maybe -perhaps they aren't MIME compliant or something like that? All other images load without problems but these Mac Photoshop images do not. Drupal gives me the following error:

I've been trying to figure out how to use the block path to do a few simple things, and I'm having some success, but I've been stuck for the last 3 hours trying to figure how a regular expression for what I want to do. I have three types of blocks:

1) Blocks that I want on the home page only (the path <^(/|index\.php)$> works great for this).
2) Blocks that I want on the home page and specific other pages (the path <^(/|index\.php)$|(forum)> puts a block on the home page and the forums pages, but no others).
3) Blocks that I want on every page EXCEPT a few specific ones. Here's where I'm having problems.

<(^/$|[^(staff)(photos)/]+)> successfully takes a block off the staff and photos pages, but I'm having two problems trying to expand on this.

First, I want to add a few more items to this list, but anything inside the brackets is only a list of characters, not specific words. The parenthesis I have there aren't even necessary. In order words, if I had a page named "fotos" it wouldn't have the block either because the order and grouping of the characters doesn't matter.

Second, I want to add "node" to this list, but this doesn't work: <(^/$|[^(staff)(node)(photos)/]+)> because the URL is actually going to be more like "node/view/20".

So the real question is how do I make a block appear on every page EXCEPT, say, the following pages:

I found my site have no title.

Can the filestore restrict the upload file size? If not,how can I do it.