Hey karl, could you give me the list on non working games if you have it, because it whould help me with removing them so i can fit all my roms on one disc. Also is there anyway to stop region lockout in segagen, if so how explain, thanks.

Wheew. Some time ago since I worked on SegaGen.
So, sadly I don't have my complete checklist N-Z anymore. Nevertheless, these are the ROMs (A-Z) that will at least get beyond the country check (use either alternate versions from the GoodGen-Set or do some header-editing using the Genesis LaunchTool mentioned ealier):

Aah! Harimanada
Asterix & The Power Of The Gods
Chaos Engine 1
Dodge Ball - Kuy Kid
Donald starring in Maui Mallard
Dragon Slayer 1
Dune 2
Elitserien '96
Golden Axe 3
Hybrid Front
J.League Pro Striker 2
Janou Touryumon
Jimmy White's Whirlwind Snooker
Kick Off 3 - European Challenge
Megaman - The Wily Wars
Ottifants
Premier Manager '97
Pulseman
Puzzle and Action - Ichidant
Puzzle and Action - Tanto
Sailor Moon
Sensible Soccer
Slam Dunk - Shikyou Gekitotsu!
Smurfs 2
Soleil
Speedy Gonzales - Cheeze Cat-Astrophe
Spirou
Story Of Thor (--> use 'Beyond Oasis'-ROM)
Striker
Thunder Force 4
Tintin In Tibet
Total Football
Toy Story
Ultimate Soccer
Waterworld
Williams Arcade's Greatest Hits
Worms
Xenon 2 - Megablast
Yu Yu Hakusho - Makyoutohissen

BTW, I don't think that there enough non-working ROMs, so that could be reduced to fit on one CD-R. I have them on two (A-M and N-Z) and that's fine with me...

Hmm yes mine span 2 disc also, but you know convinence of one disc is nice, I think i did try patching the games region code and it didn't work for me, maybe i did something wrong. The two games i really wanted to get working are Puzzle and Action - Ichidant (1) [!].bin, and Puzzle and Action - Tanto (J) [!].bin. They are like wario ware, can you tell me if you got these games working.

Yupp. They both work fine (except for the crappy sound, of course)...
Could mail them to you...

yea that could be an idea though i'm going see if i can actually patch them myself, why don't you email me the tools necesarry to patch them and a short text file on how to do it. I thought i was patching them correctly but i must have messed something up i thought it was simple. lucas_wagner**********com