Urgent pls help me...(internet)

Hi guys the thing s tat i hav idea/spice connection(n70) where i wanted to use internet nd i couldnt find any crack for it...then i activated zero rental plan nd installed opera 3.11ver..by tat i was able to use net not only wap but also the web..dint charge me anything...but i am not able to download any stuff not even the images its comin eror...wat to do???pls help me...nd pls tell me wat s modded ver of browsers???