# How to install FlexCell Grid Control for .NET

1. To install the updated version of FlexCell Grid control for .NET, please don't forget to uninstall its previous version (or trial version) first, this step is essential!
2. If you are using Windows XP, Windows Installer has been already embedded in your operating system. After double-clicking FlexCell.NET.msi, if the installer is not open, you can install by command line, something like:
   msiexec /i c:\unzipped\FlexCell.NET.msi
3. If you are using Windows 9X/ME/NT/2000 operation system, Windows Installer may not installed in your computer yet, or the installer version is before 2.00.2600. In this case, you need to download MSI bootstrap program first, otherwise, FlexCell.NET.msi can not be installed.
   To display Windows Installer's version, please use the following command:
   msiexec /?
   To download and install Windows Installer, please click the following link:
   Windows 95/98/Me (1667KB):
   http://www.grid2000.com/msi/InstMsiA.Exe
   Windows NT/2000 (1778KB):
   http://www.grid2000.com/msi/InstMsiW.Exe
4. Please update your program following the instructions described by "FAQ" in the help file.