Hexadecimal to Decimal

Hi guys.

I have a little problem converting Hexadecimal Values to Decimal values.

Coming from Javascript i had the function:

alert(parseInt("4dc0099df16a60a2cfe6cd65d4428794", 16));

Result: 1.0334767172749964e+38

I know the function:
CLng

But when i try

MsgBox CLng("&H4DC0099DF16A60A2CFE6CD65D4428794")

i always get: Type Mismatch Error.

Can anyone please help me.

Thanks much in advance!!!