ok, so i just decided that i'll sleep hungry for a week just so that i could save money for the airport express. i've set up the airport express, and the music quality is AMAZING... but im having a problem... i want to use Airport Express as my wireless network rather than my Wireless Router that i am currently using. do i have to connect the Airport express with the wi-fi router using an RJ-45 in order for it to boost signals, or can the airport express catch signals and boost them itself? becasue if it can, it isn't doing so right now, when i scan for wireless networks, it only shows me my WIFI router... any ideas?