Reading Registry

Hello
I'm trying to read the DHCPServer configurations from registry. When I'm trying to read the value StartAddress from the following key;
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DHCPServer\Configuration\Subnets\xxx.xxx.xxx.xxx\IpRanges\xxx.xxx.xxx.xxx

The data is a REG_DWORD and the value is save as a hex value, ex;
0x93d66502 this is decimal 2480301314

This value is to big for VB to handle, so the result I'm getting is something like 1.115464484456675E-314,5 and this is an invalid value.

Does anyone know how to read this value.

Thanks