To upgrade your FrontPage 4.0 to FrontPage 5.0 on server and register it in H-Sphere:

1. Download FrontPage 5.0 extensions from the Microsoft website.
2. Set path to FrontPage directory in the 'frontPagePath' variable in the H-Sphere configuration file (conf.inc).
   For example: frontPagePath = C:\\Program Files\\Common Files\\Microsoft Shared\\Web Server Extensions\\50\\BIN\\
3. Set FrontPage administrative program name in 'frontPageAdmUtil' variable in H-Sphere configuration file.
   For example: frontPageAdmUtil = "owsadm.exe" (fpsrvadm.exe - for 4.0 FrontPage and owsadm.exe - for 5.0).
4. Restart H-Sphere HSSvc service.