//nChecksum is sum of all appropriate bytes in message
//csTemp is just a string that gets filled with the 3 checksum bytes

void CV3Page::CalcChecksumString(CString &csTemp, int nChecksum)
{
        BYTE nFirstChar, nSecondChar, nThirdChar;
        int nTemp;

        //Calculate the checksum values
        nThirdChar = (BYTE)(nChecksum & 0x000F);//LS 4 bits
        nSecondChar = (BYTE)(nChecksum & 0x00F0);//MS 4 bits of LowByte
        nSecondChar >>= 4;
        nTemp = nChecksum & 0x0F00;     //LS 4 bits of Hibyte
        nFirstChar = (BYTE)(nTemp >> 8);

        //Build up the checksum string...
        csTemp += (BYTE)(nFirstChar + 0x30);
        csTemp += (BYTE)(nSecondChar + 0x30);
        csTemp += (BYTE)(nThirdChar + 0x30);
}