Ah ha problem solved!!!
It would appear that my printer, although it is GDI is also a network printer (my excuse for not knowing this is that I bought it for its banner printing qualities:smileyhappy:) so all I have had to do is plug it into the wirless adapter, instal some software for XP & voila I can network print.
So thanks to the excellent help on this forum I now have a fully working Linkstation Mini which is networked to 4 pcs & a network printer.
One very happy bunny!