Capitalised and lower case url problems - help!

I have an arcade site with around 700 games and I've been seo-ing it for a few days now but have just spotted a problem.

Google has indexed most individual urls twice. The first is all lower case and the second has capital letters in it:

http://domain.com/games/create-a-ride

and

http://domain.com/games/Create-A-Ride

I thought the default with web hosts was to write all urls with lower case, or am I wrong? Is this is host problem or is it a site script issue?

 

Most likely a script issue.

 

My script does use capitalisation for some of my internal links, this must have caused the problem.

What is the bets way to fix it?

 

I think a 301 redirect to the lower case url should fix that

 

Yep, script issue. I would look at generating a google sitemap and then uploading that to your site (Just in case you have not done so already).

 

Is there a short cut to rewriting/redirecting all capital letter urls to lowercase urls? Or do I have to add each of the few hundred urls to the .htaccess?

thanks for your help