I am glad I do not have to be a mechanic to enjoy driving a motor vehicle ... but it seems I need to be a computer engineer to "drive" my PC. It seems every time I want to run a new program that I am forced to research the inner workings of Windows to get the application running. This time I am wanting to run a piece of software that uses MSVDRT.DLL. The version in my winnt\system32 directory is 6.0. The program requires version 6.1 to run. The program writers have supplied version 6.1 but I cannot copy it to the system directory. At first I tried to simply copy the file but was denied access due to the file being in use. I then re-ran the latest service pack 6 for NT4 hoping it would update the msvcrt.dll to a later version. (but it did not) Next I went to the Microsoft support site and downloaded a program called "inuse.exe". I tried this several times and it kept reporting that the full pathname must be used, I played around with various options and combinations of paths and directories. ie. inuse c:\msvcrt.dll c:\winnt\system32\msvcrt.dll, c:\inuse.exe c:\msvcrt.dll ..... I then searched for other options and found ms.exe, but this is only available from the NT resource kit CD (which I do not have). Next, I contacted the code supplier again and was informed to download IE6. I did this but still no go... I then thought I could boot to floppy and copy file without Windows running, but the NTFS files system is not visible when I do this. Would someone please advise how I can update this file without buying a new PC, reformatting my hard drive, reinstalling Windows or using another operating system BEFORE I loose the rest of my hair. Thanks Regards David Huisman -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body