Regarding the Windows XP Home Edition with SP1a already installed by Dell onto my  PC, can anyone tell me whether or not SP1 is the same as SP1a?  (Service Pack 1 or 1a).  I am doing a re-install from downloaded Setup Installatin Floppies with SP1 and it would be helpful to know whether or not the SP1a is going to be an issue?  I am using the floppies because the installation CD won't boot to my PC.  I am working on figuring that out, but if I don't figure it out I will need to use the floppies.