Deserialize Binary data in a user-defined variable via serial port (VB6)

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VB6

Hi all,
I want to import binary data via serial port (RS-232) directly in a structure (user-defined datatype) and, in a second time, put them in a DB.
I know that I must use MSCOMM ocx but I don't know how I can deserialize binary data directly in a user-defined data type.
Try to speak better. In my situation:

1) PC sends an update request to the MACHINE

2) the MACHINE sends to the PC many packets with this structure:

HEADER + Packet + FOOTER

3) PC put this data in a DB table and send an ACK to the MACHINE.


Now, the header has this structure (not VB6, it is only descriptive):

struct theader
{
unsigned char id[8];        //"MAV H"
unsigned int packet_type;   //there is many type of packet ()
unsigned int n_bytes;
}header;

The footer:

struct tfooter
{
unsigned char id[4];        //"MAV F"
unsigned int packet_type;
unsigned int last_session;//1 if the last, 0 otherwise 
unsigned int cks;
}footer;

Packet:

struct lot
{
char lot_element[16];
char lot[8];
unsigned short percent;
unsigned short lot_number;
unsigned int quantity;
}

In the onComm() event of the MSCOMM.ocx control I receive the data, but I can't find any information on how to put this data directly in the lot type. i.e. how to deserialize binary data.
Anyone can help me? :confused:

Thanks!

Eric R.