Hello and thank you for choosing just answer.
I will give you my personal opinion. I am an automotive technician, I work on cars everyday and if my car has a broken or cracked windshield i'm calling someone to get a new one in, It might seem as an easy job but it can turn into a nightmare in a second and also you should consider how many problems that may result from an improper installation of the new window(Water leaks,wind noise....etc)
So to answer your question you can replace your windshield but if you ask my advise then I would tell you save yourself the aggravation and the possible problems in the future and have it replaced by someone who knows what they're doing. It doesn't cost a fortune to have a windshield replaced.