You can but you need to make sure findings (themes) elicited from interview are reliable (e.g. intercoder agreement) and valid (e.g. content validity) before quantifying them into numerical data for inferential analysis. Descriptive analysis in SPSS for nominal data is not a problem.
SPSS Statistics V20 and all other versions have extensive facilities for analyzing qualitative data, some in optional modules. If you need specific advice, you will need to say a lot more about what you are trying to do.
Yes, but the key point is that you should first think at the type of analysis that you want to do (what’s are you trying to understand?), "design the interview", prepare a coding for the answer and then do the analysis. it is very hard to do the analysis if you did not follow this route
The idea is that I coded my data and came up with labels "themes" to some chunk of data. This allows me, I guess, to use it. For example, we can enter the values 1 & 2 to refer to male & female. Similarly, I enter the values 1 & 2 & 3 & 4 ...etc to refer to Theme 1, theme 2 , them 3, in this case, I can examine, say, the relationship between the themes.
I am thinking about it and please give us more ideas even if the question is a bit old