Trial versions of ARCHLine.XP allow you to use the full version for for a limited period of time.
However, trial will provide watermarked rendering output with the maximum size of 640*480, and the printing sheet is limited to A4.
If you don't already have an ARCHLine.XP account, create one at the start of the download process.
Try ARCHLine.XP free for 30 days.
You can use the full-featured program without reinstallation by entering the serial number that came with your purchase during and after the trial.