Are those CD images or ROM images??? Back in the day I used to make backups of my originals but never dl'ed them off the internet.Just go to Ebay and buy the original games for like $10 apiece..I see them sell on eBay for real cheap all the time.. If I were you though,I would have kept that cart system and sold the games in order to buy one title you really wanted for now and then saved up for the next title.
CDR's and Emulators are frowned upon in this community.
GET THAT CART SYSTEM BACK NOW!! or Get an MVS board.If you must go CD,get a DC.
Neo Geo CD ain't nothin' compared to the cart.That single speed drive is toio slow and if your lens goes bad where ya gonna get it replaced??? If that unit dies you're SOL.
I know you need help now and I apologize but I think I may have given you the best advice you can possibly get.Why hassle with burning a CDR whne you can purchase the original for $10??
-BB