I have managed to get this setup working, but it is very unreliable and either the printserver or the printer seem to crash and won't respond after 1 or 2 prints. I am able to still access the web config of the 175x.
I had a similar problem with a Linksys wireless print server and assumed that a HP print server would do the job better.
Anybody any ideas what to do next? It is not possible to flash the printserver, nor the printer as far as I know, so I assume I have some iffy settings in the print server config somewhre. All our users are on Win7 or Vista.