If you have the instructions, why do you need someone to install this for you? The instructions are right there. I could do this easily for you, so if you really wanted, I'm willing. (I'll PM you this message too).
But I think this is a good "easy" thing to begin with.
First things first...
Do you have PHP and MySQL on your server? If you are unsure, create a file called info.php, and put the following inside it:
Then upload it to your web directory, and call it in your browser:
www.yourdomain.com/info.php.
If you have PHP on your server, you should get a lot of information about the configurations, etc... If you do have PHP and MySQL, just do what the instructions say - create a new database (using phpMyAdmin or something, usually you can get to it in your cPanel or whatever control panel you use), create a database username and password, go into config.php and enter that information (it should be labeled so you can find it inside the file), upload everything to your server, run the install script, then delete install.php and your done!
PS: I'm wiling to do this for $NP, but I think you can do it.