i completely mod my samsung moment to 2.2.2 using (froyo) i cant recieve service or mobile data connection ?

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i used this link http://forum.sdx-developers.com/?topic=13731.0 to mod my phone and worked out great until i start up my phone and it say no service i thought i needed a minute so i left to play basket ball and STILL NO SERVICE please help my upgrade is 9 monthes from now and i hate my phone ...........p.s. the wifi has an error problem each time i try to activate it. PLEASE ANYONE I LOVE U IF U CAN HELP