How do I combine variables in SPSS with missing data to create a new variable?

I have 3 variables: A, B and C which are elements of the new variable I want to create. However, respondents were asked to choose (1- yes, 2-no) for which of the following applies to them. How do i create a new variable without using compute?
I must confess that I din't quite understand what your 3 variables contain (3 yes/no variables? or something else?)
and what the new variable should contain (a yes/no variable? or something else?) and what you mean by "without
using compute". If you do not want to compute a new variable, then you can enter the values of the new variable
by hand,, but maybe you had something else in mind?

With kind regards