Collectible Card Game Headquarters

well is there anybody that can explain how to add a new dll file to the program. im trying to cut out the card code of the magic.exe to shrink it enough then this might help in having enough room to code some correct arrays for the 2k limit(maybe im just thinking) and i could create a copy of one of the manalinkex or eh.dll and start to put card code in there. then change the pointers in skymagic editor to see the right area of code. i have tried this already with one card and it works great. now im thinking about being able to add this without clobbering any new updates in the normal card code dlls>?