Need idea hove to..?

[phoenix_1]

phoenix,
Read the PBP manual, specifically the section on how to define the pins to be used for driving an LCD and your project will rise from the ashes.

Another case of RTFM...

I was probe on 2x16 chr and work fine with 4x20 don't want work .
I dont know what is problem becouse i was never use 4x20!
Any sugest
Sorry for my bad english!
Regards