500 Internal Server Error……….

Hi there.

Iv run into a problem trying to get my domain name (www.promotethebass.co.uk) to work with my website (hosted with justhost). Iv tryed googling it and cant find the right info that can help me and now im getting a 500 Internal Server Error on my pages (not home page) after attempting a tutorial :/

I try give all the info on my situation because its a little complicated.

So, I purchased a domain name (promotethebass.co.uk) with a Uk-Cheapest which was directed to a google site website i made.

Google site was not that good to use so i decided to buy so hosting space with Justhost and then use wp to build a new site.

wp is installed fined, iv set up a theme i like and have it looking how i want and Iv pointed the domain to Justhost servers. coolio

When typing in my domain (www.promotethebass.co.uk) into the address bar it worked fine and took me to the wp site i built, but I noticed when i clicked to a another page of my site or logo i the address changed to and ip.

So i looked for a solutiona and coundnt find much that i could understand or anything that seemed like it would solve this problem.

I found one tutorial on wp site titled “Changing The Site URL”

codex.www.ads-software.com/Changing_The_Site_URL

which sounded like the answer. Followed the first 2 step “Edit wp-config.php ” and “Edit functions.php”. First step didnt do much in helping when applied, only making my site text based or somethink so i changed it back no problem. Applied the second method and what do you know it WORKED!!! so the home page is working with my domain name BUT when i click on my other pages they display 500 Internal Server Error

This is the point iv reach in my attepted to get my site running correclty. Please advise on what i have done wrong or what i should of done.

Big thank you in advanced ??