I use a DOS-program in a Windows-XP command prompt. The file format of that program is not supported by newer versions of the program and my needs are satisfied by this program.
The program is purchased with a parallel port dongle used for software-protection. Now I want to upgrade my PC and think about a notebook. Nowadays you don't find any parallel port at any notebook. While I already use a USB-to-serial converter I always had a genuine parallel port.
Do you have any experience with USB-to-parallel converter? Theses dongles are suspected to use features that exceed the normal printer control logic.