storing and retrieving pdf documents in MS ACCESS using VB.NET

Question

Hello friends, I am a newbie to the .net platform. I am doing a small work at my office which needs to store pdf files into access database. I have declared the datatype as OLE object and I tried to read and save the pdf file as byte array and i recieve type mismatch error. I also tried with byte and integer datatypes of ACCESS. anyone plz help me. thanks in advance. kumar