Pentium IV, 512+ MB RAM, 50 MB HDD, Windows 7 / Vista / XP / 2000 (32- /64 bit).
For MS Office integration: MS Office 2007/2003/XP/2000 (2007 or 2003 recommended).
For Internet Explorer integration: Internet Explorer 6 or later.
Internet or e-mail activation required. If you don't have access to e-mail, we'll send a CD with an activation file (EU customers only).
Maximum number of processed printer jobs (converted PDFs) per hour: 30.

Notes for users of a trial version:
- version 5.0 (32 bit): Please uninstall the trial version first before installing and activating the full version.
- version 5.5 (32/64 bit): No need to uninstall the trial version, just open the program from the Windows Start Menu, folder "soft Xpansion/Perfect PDF 5", and activate the program with your product key.