sandun_kg,
I understand. That HP 1700 driver MIGHT work with the 2800 but you will potentially miss out on features specific to the 2800. You can try it - and if it works - just keep the 1700 driver.
If the 50 PCs in question are on a Windows NT/2000/2003 domain, another approach would be to "Push" the printer installation on all PC on your domain.
See:
http://www.dslreports.com/forum/r194...o-Workstations
- John