Computing a spline for a linear regression in SPSS

Hi everybody,

is it possible to compute a spline for a predictor variable directly in SPSS or do I have to use another programm like R and then import the computed spline model? I then want to enter the spline variable (I know where the knot should be and I need only one knot) as a predictor into a linear regression.

If it's possible... How can I do that? I'm clearly not a pro, so please give me the dummy step-by-step version :confused:

Thanks for your help!