Use the CommonDialog control to browse to the image then you can use FileSystemObject in VBA to copy the image from one location to any other local or network folder, and rename the file in the process.
Set fsObj = CreateObject("Scripting.FileSystemObject")
fsObj.CopyFile...
If you want to keep control within Access, you're probably going to need to get a dedicated ActiveX control which will let you load and manipulate the image. There are a lot of them available, but none of them that I use are inexpensive. And Uncle Gizmo is absolutely correct. I do a lot with...