I tried simply replacing the stock acad.pat file )about 15 kb) that came with AutoCAD2005 which I finally found in E: \Program Files\AutoCAD 2005\UserDataCache\Support with my old acad.pat file (about 175 kb) from AutoCAD2000. However, when I run AutoCAD 2005 after having replaced the pattern file, only the limited options of the stock pattern file appear. So I went to the HELP facility and it tells me to follow the instructions in the MIGRATE dialgue window to do the deed. Now if only I could find this MIGRATE tool. I tried typing in MIGRATE. No dice. I looked thtough all the pull-dwon menus. Nada. Can anyone fill me in on what to do ? Thanks in advance.