Converting some C++ definitions to VB6

typedef struct MsgsBlock
	{
	int				StructSize;
	int				ReturnCode;
	int				Flags;							// ProtData flags:	BIT0 = trial, BIT1 = non-web
	char			ProductKey[(MAX_PRODKEY_LEN+3)&0xfc]; // 30 bytes (16+13+1) rounded up to multiple of 4 bytes = 32
	int				NextRefresh;
	int				LocalExecsLeft;
	int				Expiry;	
	int				Features;
	int				MaxNetUsers;						// -1 = no limit
	int				WebExecsLeft;						// -1 = no limit
	char			ProductCode[MAX_PRODCODE_LEN+1];	// 17 bytes
	char			ExtendedError[32];
	} MSGSBLOCK;
 
#define	COMPANY_OPTIONAL	1
#define	COMPANY_REQUIRED	2
#define	NAME_OPTIONAL		4
#define	NAME_REQUIRED		8
#define	HOUSE_OPTIONAL		16
#define	HOUSE_REQUIRED		32
#define	STREET_OPTIONAL		64
#define	STREET_REQUIRED		128
#define	TOWN_OPTIONAL		256
#define	TOWN_REQUIRED		0x200
#define	COUNTY_OPTIONAL		0x400
#define	COUNTY_REQUIRED		0x800
#define	POSTCODE_OPTIONAL	0x1000
#define	POSTCODE_REQUIRED	0x2000
#define	COUNTRY_OPTIONAL	0x4000
#define	COUNTRY_REQUIRED	0x8000
#define	PHONE_OPTIONAL		0x10000
#define	PHONE_REQUIRED		0x20000
#define	EMAIL_OPTIONAL		0x40000
#define	EMAIL_REQUIRED		0x80000
#define EMAIL_VERIFY		0x100000		// Email required and verification required
 
 
typedef struct MsgsCountry
{
char	Code[4];
char	Name[40];
} MSGS_COUNTRY;
 
typedef struct MsgsRegInfoTag
	{
	char Name[51];
	char Company[51];
	char Address1[51];
	char Address2[51];
	char Address3[51];
	char Address4[51];
	char PostCode[11];
	char Country[4];
	char Tel[21];
	char email[51];
	} MSGS_REGINFO;