Root help with htc wildfire please

[ezelife]

i recently bought wildfire locked to the 3 network i unlocked it with code as i am on t mobile i put my tmobile card in but while phone worked for txt and calls but wouldnt allow me to use 3g or internet i contacted t mobile who talked me through changing apns but to avail the phone still wouldnt work can somebody please help if i put 3 sim in the phone 3g works fine so i presuming it is locked somehow on data to 3 network