Transfer Data from PIC16F877A to arduino

hello.. Im a newbie of arduino also in PIC can anybody give me idea how to transfer data from the PIC to arduino? what methods would I use?

Be more specific, do you mean dump PIC and load into AVR? It is not possible. Do you mean take source code for PIC and compile under Arduino IDE? It is not possible, source code must be rewritten. Do you mean grab data from program running on PIC and send to AVR? Here is many possibilities, you can use UART, I2C, ICSP, ...