If I'm on a windows server do I have to use ".\" instead of "./"? Just a thought...
If you mean relative paths so using '../' to go back up the directory tree and then adding the rest of the path to come down the tree you should be able to use either '/' or '\' for Windows - it sorts it out for you - I think.
If it's *nix box then you need to use '/'.
So I recommend you use '/' as that should work regardless of server OS. To give an example if you have a site 'www.myschool.com' and you want to go to the images directory you could do so with 'image'mypicture.jpg' to get that file.
If you are in a sub directory say 'www.myschool.com/pages/classes.php' and you want to get an image from the image directory, which is at the same level as the pages directory then '../image/classpicture.jpg' should do the trick.
It is definitely a double'.' to go back up the tree though. The simple solution might be to use absolute paths rather than relative ones anyway.
Cheers
nathj