, which requires a complex setup and registry entries, a portable version is self-contained. Portability : Users can carry the entire application in a compressed
If you truly need Visio 2003 for historical or archival work, do it properly: buy a used original CD (no activation required for the retail version), run it in a disconnected Windows XP virtual machine (VirtualBox), and never expose it to the internet. Microsoft Office Visio 2003 Portable.rar