Storing Image/docs Into Mssql

I need some advise and direction on the above issue. I am doing a site where a user are able to upload/download files (image/document). Currently i am storing the physical file on a directory and store the path and filename in mssql.

To retrive the file, i will just simply extract the path and filename to point to the file on the directory. Simple as that. Now i am having a problem when another user might upload a image/document with a same filename as a existing file. I can't replace the file or ask user to give a different filename when uploading to the directorty. So, i am thinking is it advisable to store the image/document in to MSSQL? If so, how do i do that?