Help with Wireless Router

[slap204]

hi all can sumone help me i have got dlink 635 wirless router i can not get my psp slim to connect to the Internet but i was working find the othere day it will find other router but not mine my boys psp/ps3 and laptop will connect plz plz plz help me

[dell_xps]

Do you have the SSID on hide ?
If so you will have to put the SSID and encryption key in manually.
If not reboot the router, switch it off and on, then scan your psp to find the router.
Have you switched the wifi button to off on the PSP ?