Yes, you can.
You just need to use packaging software that is smart enough to use something like WMI filtering or another check to see if SP1 is installed and if it isn't then install it.
I've never seen any free software I've tried do this very well and I've never been bothered enough to pay for any so I can't recommend one but there are several.
Last Wiki Answer Submitted: July 6, 2011 3:16 pm by ErroneousGiant3,120 pts.
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Is there any reason why automatic updates can’t do the job after you install it?
At least that way it would install all outstanding updates needed.