Here ya go. This should set your Dock back to normal, and you'll be good to go! (You still never provided a screenshot, though I'd like to see this ugly Dock.)
0) Download
this zip file from my iDisk. Unzip it.
Now, you'll first need to delete your existing Dock. The best way to do this is via the Terminal, or by logging in as root user. Since via the Terminal is probably easier, I'll go into detail here. Note that I'll use a more safer way.
1) Go into the terminal, and type in this command:
sudo chown username /System/Library/CoreServices
Note that you should replace
username with your user name that you use to log in (the short one).
You will also be prompted for your user password. Don't worry, there's no destructive things happening with this command it's just changing the owner of the folder so you can have changes in the Finder.
2) Now that the folder is owned by you, you can use the Finder to replace the Dock. Navigate to /System/Library/CoreServices in the Finder, and delete "Dock.app" (it will probably only appear as "Dock"). You won't be able to empty the trash, since your existing Dock will probably be open. Don't worry about that.
3) Copy the Dock application included in this zip package to the /System/Library/CoreServices folder by using the Finder.
4) Go back to the Terminal. Type this command:
sudo chown root /System/Library/CoreServices
Note that you may not be prompted for your user password you have root privs in the Terminal for 5 minutes from your first "sudo" command.
5) You will need to make sure the permissions and owner of the Dock application are correct. To ensure this, execute these two commands in the Terminal.
sudo chmod 755 /System/Library/CoreServices/Dock.app
sudo chown root /System/Library/CoreServices/Dock.app
6) Logout of your current user.
7) Log back in with your user. Hopefully the Dock will automatically start up all restored to its original parameters. If it doesn't there may be additional privilege problems, but it should work. All your Dock items should be retained as well.
8) Delete the Dock.app application residing in your Trash. It should no longer be in use and you should be able to delete it without any problems.
I hope this helps.