[ask] how to make program with C++ builder on comunication usart

[bim2hendri]

ask help...
i have some problem about how to make program interface with C++ builder...?
my final project is implementation car velocity controll .
the requery such as
1. microcontroller Atmeg 8535
2. C++ builder (interfacing to computer)
3. sensor
my problem in C++ builder is used in usart comunication....
please help me....