Create mst using ORK toolkit - http://office.microsoft.com/en-us/office-2003-resource-kit/CH001149686.aspx

Run this command to install office on Citrix server – this could overwrite existing mail profiles so use with caution! – only generally do this when a clean install of office on ts/ctx server

\\Office2003 MSI\setup.exe" TRANSFORMS="\\advantage\deployment\GPO\Office2000 MSI\NoOutlook.MST" /qb

NB: Change path to mst