Climate control was working... then not blowing cold... now wont blow air.

[karmas_benz]

My 85 300d is having some climate control issues. The car initially had a fully functioning climate control system, blew VERY cold and hot, all systems go. Then the the system stopped blowing cold, I refiled the freon and it still had the problem. I didnt run the car for about a week and when I did the blower on the climate control system would not run at all. The main cause for concern is that the front windsheild fogs up and i cant see while driving.

Where would you start to assess this problem? Has anyone experienced similar happenings?

Thanks!