Standalone network printer doesn't appear in network places

Hi,

Windows XP Pro, SP2. OKI C7300N printer.

I've installed a standalone network printer (i.e. not connected to a
particular computer). Its IP address (assigned by DHCP on my router) is
192.168.0.7.

I've put it in the same MSHOME workgroup as the 3 computers on the network.
I can ping it by IP address and by name fine from all 3 PCs.

I've also run the Add Printer wizard by specifying a network printer and the
URL http://192.168.0.7/ipp (the printer supports IPP - Internet Printing
Protocol) and the printer now appears in Printers and Faxes as 'OKI C7300N
on http://192.168.0.7.'

I can print to it with no problem, however I have several questions:

1. Despite it being in the MSHOME workgroup, it doesn't appear in My Network
Places - Entire Network - Microsoft Windows Network - MSHOME. Any ideas
why?

2. What if DHCP assigns a different IP address the next time the printer is
switched on? Will its current internet port http://192.168.0.7/ipp then be
incorrect and printing therefore fail?

3. On the printer's Network Summary web page, the NetBEUI Status is shown
as:
Computer Name : OKI
Workgroup Name : MSHOME
Master Browser : ?????

Is Master Browser being '?????' the problem?

My aim, if at all possible, is to get the printer to appear in the MSHOME
workgroup so I could then run the Add Printer wizard and browse for it by
name instead of using the URL IPP method.

Hope someone can help - thanks for any info or tips.