I strongly suggest you try installing it yourself. It'll be a beneficial learning experience, since you'll then be able to handle tweaks and updates in the future. After all, if you totally jumble it up, you can erase it and try again.
Right now, I'm looking at the instructions:
Step 1: Done
Step 2: http://wiki.dreamhost.com/Mysql
Step 3: The download; Skip ImageMagik and just use GD; Directory structure will start with EXAMPLE.com, and not "photopost" if it's your main site
Step 4: Follow their instructions
Step 5: Skip, as it's the vbulletin setup
If you run into trouble, post here.