Salem:
If you don't have a computer now, then I would suggest you to purchase one (if you have the $$). I recommend a computer (desktop or laptop) because during my first year at Nova I used my computer for papers, presentations (powerpoint), access required school stuff (notes, cases, email announcements, webstar), and online courses. I know dental schools are really pushing the technology front. If your school is not into all that technological stuff now, trust me, they will in your four years of dental education.
Although your school does not require a laptop, but your school may have an online course or two in the next four years. I, personally, would not be able to function with all my errands if I didn't have a computer at home so I guess it's really all up to you on how much you're dependent on computer now and how demanding is your school of you to have access to internet.
I know at my school, a lot of professors are giving us lecture powerpoint slides on CDs or provide their lectures on the internet. All of our announcements from school are in email form now (paperless). A computer is definitely a must for me and my dental education.