Dev-Pascal could be quite nice -- I like Dev-C++. I used RHIDE when I was trying out DJGPP but I found it to be a bit clunky, to be honest.

This may be slightly off-topic, but Lazarus for FreePascal looks pretty snazzy. It could turn out to be very interesting.

If you are serious about using Gnu Pascal, drop me a direct email and I will send specific intructions. Or if there is enough interest I can post it here.
I might do that in a little while. I'm flat-hunting at the moment with a couple of mates and will hopefully be moving about June/July. One of my mates has a Linux PC so it would be handy to know about Linux compilation w/ SDL. I'm not in a rush yet, though, because I already have far too many other things to look at first!