There isn't a whole lot of explanation required for you to successfully edit NUB-HEAD.INS and then append NUB-BODY.ASM to it. 1) Go through NUB-HEAD.INS and choose which EQUates your system will require. 2) Costomize NUB-BODY.ASM as you wish, or leave it as is -- whichever you prefer. 3) Use PIP (or a similar utility) to combine the two: A>PIP B:NUBYE101.ASM=NUB-HEAD.INS,NUB-BODY.ASM[v] Note: The example above assumes you have limited space, so have PIP and the other two files on a disk in drive A and tell PIP to create the new file on drive B ( the [v] forces PIP to verify the procedure). 4) Now, all you have to do is assemble NUBYE101.ASM! If you have any problems, please don't hesitate to call my system and ask for help! Tom Brady Decibel RCP/M (PBBS) (404) 288-6858 300/1200/2400