_retVal:=
@If(
@RegQueryValue("HKEY_LOCAL_MACHINE"; "Software\\Microsoft\\Office\\8.0\\Common\\InstallRoot"; "Path")!="";"Office 97";
@RegQueryValue("HKEY_LOCAL_MACHINE"; "Software\\Microsoft\\Office\\9.0\\Common\\InstallRoot"; "Path")!="";"Office 2000";
@RegQueryValue("HKEY_LOCAL_MACHINE"; "Software\\Microsoft\\Office\\10.0\\Common\\InstallRoot"; "Path")!="";"Office XP";
"no Office installed");
@Prompt([Ok];" ";_retVal)