not a nokia fan :
currently locked to Cricket wireless but need to switch provider. need any assistasnce you can provide. thanks
You need to "unlock" your phone, not "jailbreak" it. So, use your favorite search engine to search for "unlock <my phone model>"
Also - "Locked" is not purely correct term, you bought your pre-paid phone very cheap fully aware that you will be "locked" to CW/AT&T.