robbo
It looks to me like nobody in Ms.Megas has ever learned or used Ms.Access, or you would have received some comprehensive Help by now, for certain!
I found a couple of Sites, including a Access Help Forum, have a browse through them, might help! (If your Database is not Password protected, maybe your Files are corrupted, and you need to do a Repair?)
http://support.microsoft.com/kb/283849/en-ushttp://www.google.com.au/search?sourceid=navclient&ie=UTF-8&rls=GGLG,GGLG:2005-22,GGLG:en&q=Ms%2eAccess+2007+Database+HelpJutta