Hi everyone I am having troubles reinstalling an educational software which I had runing before on my compaq laptop's Win xp home ed. I had restored my system to its manufacturer orginal while ago and did not reinstall this program since. I am sure it was runing perfectly before but I cannot remember whether this was when I installed sp2 or not last year. Now I need to reinstall this software again and all I have every time I try is "can't run 16-bit windows program. insufficient memory to run this application . Quit one or more windows applications and then try again" According to this article on Microsoft http://support.microsoft.com/default.aspx?scid=kb;en-us;324767 I first tried the run commands but I still had the same problem. Then I replaced config.nt and autoexec.nt as recomended and this did not fix it too. I couldn't replace the third one (i.e. command.com) because I need my windows installation CD which I don't have as my computer came with preinstalled xp from Compaq and all I have is their recovery CD. I have been searching for two days to find a way around this but could't. Everything else is working fine with no problems. I tried to find any solution on compaq/ Hp website but none. As a last resort I thought of partitioning my disk so I can backup my files on a separate partition and then reinstall xp using Compaq recovery CD and then reinstall my program but this even seems to be unachievable as I have no "unallocated free space" for new partition. I appreciate your help and thank you in advance.