Peoples ive sat for 3 hours trying to get my ps3 to do the business wireless, 90% sig strenth.

my problem is as soon as it tests connection it fails on the i.p address bit, ive got the correct details in there. does the ssic thingy effect it much, ive basically wrote speedtouch followed by the serial numbers, also proxy server ive not done anything in there????, its driving me banannas

where am i going wrong, it used to connect adges ago before i hard it hard wired, so my router should let it in etc, but iL be dammed to how it done it before.