(copy and paste -> www.freewebs.com/xooba/castle1a.zip to your browser)
I just made a remake of Dungeon Dilemma with following changes :

• Changed tileset to Castle 2
• Bonus room accessible after finding 70 purple gems
• Enemies changed (except bats)
• More secrets
• A bit harder
• Improved eyecandy

And that's it. Enjoy. Please also report bugs if any.