I changed my settings in 1and1 so that now 1and1 is forwarding e-mail messages to both of my e-mail services. I tried to find the latest iteration of sync software that Yahoo provides. This is too bizarre an experience to recount in detail but it is worth noting that I could not find the Yahoo web page that allows you to download Yahoo sync software.
Google does not have its act together either.
What I may wind up doing is sync the data on my Palm Treo 700P to Microsoft Outlook as a first step. To get the data to Yahoo and google I now think I may need to export the data from Outlook then delete all records in Yahoo and google and then import the data from the Outlook export file. I know, it sounds like a joke but it's not. This is the state of sync.