Corelation analysis help

I am a newbie to SPSS so am stuck with this corelation analysis. i have done a survey with 150 respondents using a likert scale ranging from 1=Strongly Disagree to 5=Strongly agree. i have 4 IDV's and for each IDV i have asked 4-5 questions . my query here do i need to corelate each of these question with questions for the remaning 3 IDV's ?? or should i jus pick one random question from each IDV and corelate with other IDV's questions do i do this ....please help