Hi there, I have had a lot of trouble installing ground enviroment also, I would get various errors- files missing which were installed and also a run time error R6034 and MSVCR80.DLL missing (which was installed) the method I used was to goto my computer, right click on ground enviroment cd-rom, select explore, contained on this disk were 5 files one of which was a red setup icon (DONT CLICK) and one folder called GE2006 and within this folder there is a purple setup icon, I double clicked on it and it installed no problem. I think the problem lies with the cd auto run program. Give it a try worked for me.