Usb to serial converter with pic18f

Hi,
I'm working on redesign device which have PL2303 and few passives components, and transistors. My idea is to replace PL2303 with PIC18F and to add more functionality.
But I do not know how to send serial port settings(baud rate, parity, etc) from PC to PIC.
Does any one have idea where to start? Custom drivers for windows:confused:

Update:
Just found that microchip usb stack 2.x support notification system when baud rate is changed on host.
Is there any way to implement that on existing cdc example for PBP?

I run into same issue, again. I needed to create full serial port emulator, like FT232, and to do some other things with pic.
I spent almost a week, trying to get C to work, and decided to give PBP another try.
This time with good result.
To get baud rate, parity and stop bits from original CDC demo, use this code

Code:

---

    BaudRate var long BANKA SYSTEM
    StopBits Var        Byte BANKA SYSTEM ;0=1 stop bit, 2=2 stop bit
    ParityType Var        Byte BANKA SYSTEM
    DataBits Var        Byte BANKA SYSTEM
Main: ' original code from CDC example

    GOSUB GetLineCoding 'get baudrate etc... Should do that regularly and check if anything is changed
 

GetLineCoding:
asm
        movlb        high _USBMEMORYADDRESS        ; Point to proper bank

        movf        line_coding + dwDTERate, W
        movwf  BaudRate
    movf        line_coding + dwDTERate + 1, W
        movwf  BaudRate + 1
        movf        line_coding + dwDTERate + 2, W
        movwf  BaudRate + 2
        movf        line_coding + dwDTERate + 3, W
    movwf  BaudRate + 3
   
        movf        line_coding + bCharFormat, W       
        movwf  StopBits
       
        movf        line_coding + bParityType, W       
    movwf  ParityType

        movf        line_coding + bDataBits, W       
        movwf  DataBits
endasm
RETURN

---