Cheap mobile phone or pda sat nav ( gps ) for my car ??

I have got an n-gage / gps reciever / route66 mobile but the maps are out of date. i live in the southeast of england and there a lots of new roads being built. i went on a short trip to braintree from the stansted area and the new a120 road doesnt exist on my route 66 map software. :-( can these maps be updated ?? or do i have to purchase new software. i looked on route66.com and they have a new version out mobile 7 but the ngage phone isnt supported. i dont want to spend much as i have e thing in place that i need just for the out of date maps. any ideas would be great !!!
Answer
I found this helpfulhttp://www.drivingmapdirection.com/