Printing with Windows 9x clients

I just changed servers from Windows NT server to Windows 2000 Server. The problem is that all of my Windows 9x clients cannot see some of the network printers. All of our printers are HP 4000 series and 5000 series, it sees some of them but not all particulay the one that they use to print to. I tried forceing the install by puting the path in using the \\server name\printer name and using\\the servers ip address\printers ip address still nothing.

Someon please help.
Thanx