Prlblem with CreateFile

From: etitan (uroaky_at_hotmail.com)
Date: 07/30/04 

Date: Fri, 30 Jul 2004 17:34:54 +0800

I insert a CF interface GPS in my pxa255 platform ,and it mount to com3,when
I createfile to open it ,the EVC died athLocal = CreateFile (TEXT("COM3:"),
GENERIC_READ | GENERIC_WRITE,
                           0, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED,
NULL);

Could you help me?