I have still on the problem that my XP don't find the driver of EPM900. I install the driver from 2937.zip following your instruction. But still on the same result. The folder "Detail" of the device manager shows the following string: "USB\VID_0547&PID_2131\5&28195792&0&1" When I brose the the location WINDOWS\INF for installing the driver via device manager, it will be not find. Some days before, I installed at the same Laptop the driver for DS_FT232R (VCP). Perhaps there are related to the actual problem! Who has an idea?