If you are saying that you uploaded an MDB or ACCDB file to SharePoint and then want to use a Frontend File to be attached to that file, there isn't a way to do that.
If you have SharePoint lists, you can link to those with a frontend and store the data within SharePoint (in the lists) but any version prior to Access 2010 and SharePoint 2010 with Access Services, is not all that efficient and you can only work with small amounts of data.