replacing a switch statement in c

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C

I was wondering if I could ask you for some help, i'm playing with a pic USB interface tutorial, where an unsigned char is written to the firmware from a c++ application.

ProcessIO(void)
{
if((USBDeviceState < CONFIGURED_STATE)||(USBSuspendControl==1)) return;
       if(!HIDRxHandleBusy(USBOutHandle))                                    
           {
             switch(RecievedDataBuffer[0])
              {
                 case 0x01:          //do something          
           break;
                 case 0x02:          //do something
           break;
              }
	USBOutHandle = HIDRxPacket(HID_EP,(BYTE*)&ReceivedDataBuffer,64);
    }
} 

The problem is the RecievedDataBuffer[0] is tested through switch statements. I have about 60 different commands to be sent VIA usb to the firmware from a c++ application (the code I am talking about is the firmware for a PIC 18F), the only difference being the hexi code stored in the DataRecievedBuffer[0]. So instead of writing 60 switch statements, only with different hex values, I would just like to replace the switch statement above to the code below:

j = ReceivedDataBuffer[0];             //unsigned char j = recieved data
        upper_nibble = j & 0x0f0;              //bit mask lower bits
        PORTB = upper_nibble;
        DelayMs(100);

        RB1 = 1;                               //pulse enable line
        DelayMs(100);
        RB1 = 0;
        DelayMs(100);

        PORTB = 0x00;
        k = (j << 4) | (j >> 4);               //swap nibbles
        lower_nibble = k & 0x0f0;              //again bit mask to leave the lower nibble         PORTB = lower_nibble;

        DelayMs(100);
        RB1 = 1;                               //pulse enable and reset
        DelayMs(100);
        RB1 = 0;
        DelayMs(100);
        PORTB = 0x00;                          //clear port

So i'm looking to send each command recieved in the buffer to the pins of my PIC, but the program crashes...Do you have any suggestion of how I could fix this?

OK...I think this is pretty unclear...At the moment, there is a switch statement between:

if(!HIDRxHandleBusy(USBOutHandle))

...and

USBOutHandle = HIDRxPacket(HID_EP,(BYTE*)&ReceivedDataBuffer,64);

All i would like to do is replace this switch statement with the second block of code down from the top of this page, but it seems like when ever I try to put a statement other than the switch statement above, the system is completly unresponsive. I don't have an in-circuit degugger so I'm doing this blindly. I was just wondering if somebody could see something fundamentally wrong in replacing:

switch(RecievedDataBuffer[0])

with something like:

If( (RecievedDataBuffer[0]) = 0x02)

Thanks

Martyn