OK, buy this
http://www.pcworld.co.uk/martprd/sto...ory_oid=-24988
£40
and then follow this
http://linksys.custhelp.com/cgi-bin/...i=&p_topview=1
you plug the WAP54 in somewhere halfway between the router and where you want to use your laptop, you can try moving it closer to each in turn to see how it affects signal/transfer speeds if you like or if it works fine where you first choose then leave it alone