.htaccess problem

I have this in my .htaccess

RewriteEngine On
RewriteRule /resorts/([A-Z]+) /resort-info.php?resort=$1 [PT,L]

the file is in a folder on the domain called /new/

I expected that when I type in www.mydomain.com/new/resorts/Algarve to get directed to www.mydomain.com/new/resort-info.php?resort=Algarve, but I get a 404. Not sure what the problem is.

You shouldn't have a / at the start and A-Z only matches uppercase.

I also added /? so you can have an optional trailing slash (you may want to remove this) and ^ and $ to stop people adding extra stuff before and after the matched part (/new/ isn't included in any matching as long as the .htaccess file is in the /new/ directory).
RewriteEngine On
RewriteRule ^resorts/([A-Za-z]+)/?$ /resort-info.php?resort=$1 [PT,L]

You probably don't need the PT flag, but you might.

Thats great but now my css and images dont work.

Sorted those out but its not liking it if theres a space in the name eg /resorts/Costa%20Blanca


RewriteEngine On
RewriteRule ^resorts/([A-Za-z0-9\%\_]+)/?$ /new/resort-info.php?resort=$1 [PT]
RewriteRule ^resorts/([A-Za-z0-9.\.\-\_]+)?$ /new/$1 [PT]

Looks like I was being too clever ;) it was looking for a space not %20