Either by http at:
http://support.microsoft.com/download/support/mslfiles/Msvcrt.exe
or by ftp at:
ftp://ftp.microsoft.com/Softlib/MSLFILES/MSVCRT.EXE
The files Msvcrt.dll, Msvcrt20.dll and Msvcrt40.dll, are MS Visual C Runtime library files that are required for proper execution of many programs. If you have deleted these files from your system orthey were not included in the installation of a program, you may need to manually install them. You should copy the files to your C:\Windows\System folder. If you have installed Windows in a different folder, replace "Windows" with the correct path. 1. In Windows Explorer, open the folder where you have extracted the files. 2. Select Msvcrt.dll, Msvcrt20.dll and Msvcrt40.dll. Click on one file, then hold down the Ctrl key and click on the other filenames. 3. On the Edit menu click Copy. 4. Open the Windows folder and double-click the System folder. 5. On the Edit menu click Paste. If you receive a message that the file already exists, chose to not replace it. Your applications will now be able to access the C Runtime Library routines.