Before downloading the ST5 version of 2D Drafting please be aware that the XP operating system is no longer supported.
Solid Edge 2D Drafting ST5 will not install on the XP operating system.
You can continue to use ST4 and before by simply obtaining the appropriate license from the web site. You do not need to update the license until your current license is about to expire. The software will start informing you that the license is expiring about 30 days before it does expire.
Be aware that there are two license updates available from the web site. These are ST3 and before, and ST4 and after. Make sure you download the appropriate license or 2D Drafting will error with an invalid license.
Starting with Solid Edge 2D Drafting ST6, which will be released next year, the Vista operating system will not be supported.
Solid Edge follows Microsoft as they cancel support for operating systems.