I need help with the mod i'm working on. I've put together all the floors but somethimes on corners I find that there is a huge gap that you can see through to the next room.
http://i1222.photobucket.com/albums/dd497/Leemerful/cs.jpg
I just need someone to tell me how to fill in those gaps or how to arrange the floor so there not there thanks!!

There should be a column piece to fit that gap. Either that or you're using the wrong piece for the corner and you need to use a corridor piece instead of a room piece. I'm not familiar with the castle tileset.

I'll try that thanks very much!!

Just search through the rest of the tileset and you'll find an appropriate 3-way piece (or is that a 4-way) which has a pillar in the correct corner.
Using the Preview Window will speed up the process for you.

It's also handy to refer to http://tommyshideout.net/files/srikandi/TESCSItemIndex/ for a description on what each object is, to make your search in the CS easier.

This really helped me thanks very much lads!!