Can't Install HP 2550n

I have a HP 2550n printer on a network.  Running XP.  I can install the printer & it works on 5 other computers but, cannot get it to install on my Dell.  It appears to install but, says that I need to install the drivers.  I did install the drivers but, it still will not work.  This printer was installed at one time on this machine & all the others & something happened & we all got kicked off. We have been able to reinstall on every other machine but this one.