You just need a wireless access point that you can plug into the network port.

Not sure if you should be adding anything to the UNI network though - it is probably forbidden.

Something like this is good for simple domestics, although you can likely find cheaper.  There is a little configuring required, but you can get the advice easily here.  Don't use the setup CD's to configre - it actually makes it a little harder IMO!

http://www.amazon.co.uk/Netgear-WPN802-RangeMax-Wireless-Access/dp/B000BSRUFY



You can also use a cheapo Netgear DG834G router/switch/accesspoint combo - You just need to disable the LAN/DHCP in the router and ignore settings for the ADSL.

The access point can be plugged into the router or the RJ45 outlet.

A DG834G can be picked up cheaply on Ebay as they are given free with many deals when you sign up, and people then flog them.  I use two of the DG834G's as access points at home - one upstairs and one down, although one would probably cover all bases with ease.

Does your current router definantly not have one built in?

The netgear white range (home range) is a budget but reliable product.

There is one for a tenner plus £5 postage in the first link, but no aerial or PSU is included, so watch that one.

http://shop.ebay.co.uk/i.html?_nkw=wg602&_sacat=0&_trksid=p3286.m270.l1313&_dmpt...

http://shop.ebay.co.uk/i.html?_nkw=DG834G&_sacat=0&_trksid=p3286.m270.l1313&_dmp...

http://shop.ebay.co.uk/?_from=R40&_trksid=p3907.m38.l1313&_nkw=wireless+access+p...

It is usual for the uni's to stop you from connecting them as it can compromise security if you set yours up incorrectly.  One poorly configured access point could open up the entire campas network.  There may be a single network for access in dorms which is not part of the actual uni network, but even then you could inadvertently put everyones computers in the dorms at risk.

I would have thought there would be a wireless network in operation - you would have thought so.