Hi i have a 1.0.2 iPhone

Under General>>network setting

Username- (blank)
Password- (Blank)

VON - Not Configured

My Phone detects the wifi signal and connects to it but when i open up safari or installer.app (v2.63) it says cannot connect to any source

Can some one plz tell me how i can fix this and also if its not possible how i can install applications on my iphone without installer

i have found alot of files wich are .zip are supposed to be applications........it says im supposed to rename it to .pxl but when i do that ibrickr does not install it and most often does not even recognize the file

can some one plz help me???