Is there any command that allows me to save output as variables in my data set?

I need to make an average of 5 participants scores, but then save it into the data set. at the mo I'm stuck copying and pasting from SPSS output > excel > SPSS

Which is rubbish!

My hubby could do it all on excel I suppose, but he's at work - stupid work :-s and I'd like to know if its possible for future reference anyway.