I am tiring to deploy an Access .MDB application using a MSI file. Most, but not all machines will have a copy of A2000-A2007 already installed. I need to make A2007 runtime to be optionally installed. This is because 2007 runtime causes havoc with computers that have Access 2000-2003 applications installed. A2007 Runtime always wants to install I olny want to install it if the user has no MS Access. I have created a MSI using A2007 developer and have WinINSTALL to edit it with. Can anyone help with making MSI package with optional install of A2007RT?