SBI agent Eric R. Hicks spent last week scouring more than half a million files on one computer hard drive for evidence against a man accused of sending p**n to kids. Because he always works two cases at once, Hicks also was searching 100,000 files in a CP case. As the agency’s only computer forensic technician, Hicks’ work is in such high demand that he still has a backlog of about 50 cases – a year’s work…