Hi there! I'm just after some quick help from you gurus. Here's a hypothetical I need help with. Do not take the following to mean I have illegal DS ROMs... ...I currently have pretty much every NDS ROM to date, each ROM in a separate 7z file. I use OfflineList with the Advanscene DAT to keep them organised. However, I've come to the point where I want to merge the roms to save space. I don't want to use the unstable version of OfflineList that *supposedly* lets you merge ROMs (never worked for me - just crashes). I found an XMDB file for GoodMerge to let that program do it for me (merging the ROMs), however, the ROMs have to be named a certain way and I need to have one of those "Have List" files in advance. I've tried RomCenter, ClrMamePro and other programs with a combination of different dat files, xml files and xmdb files... no such luck. There don't seem to be any straight-forward instructions or clear and concise tutorials on how to handle this. I'm fed up with ClrMamePro and RomCenter, so can somebody please tell me the best way (what programs, files and method) to go from 3000 different 7z single-rom archives to a much smaller number of merged 7z rom archives? Why is it so hard to find this simple information? Thanks in advance.