Do you mean Netdviviewer software works with Android 2.3.4 but you just can not find it on the Market. Also you downloaded one from the link I gave you but didn't work??
I think it is compatiable problem, you can google the problem, but mostly you will get the information that the software is not compatiable with your phone now.
Or you can ask your customer to send you the program worked on him phone to test again.
By the way, we are now modifying the software, and will make it work under 4 split, with remote search and backup function, also support Android Tablet, will be released next month. Maybe you can wait for that to test.