Hey, congrats on getting into OT! That's my major too and I love it. As far as your questions go:
There are no specifications on different programs you will need for your computer. Anything you put on it would be solely for your own use, so whatever programs you feel you will need would be good to add. However, I would personally recommend putting Microsoft Office, or another program like that, onto your computer because with OT (and many of the other majors) you will need to have frequent access to Microsoft Word and Powerpoint programs. The school provides students with a very secure anti-virus system too, so you don't have to worry about installing that either.
You will definitely need to bring an ethernet cable or wireless card with you to gain internet access while you're in the dorms. There are different places on campus that are wireless, and we do hope to have the whole campus converted to wireless soon, but as of right now there is no set date for when that will happen. Therefore, bringing either the ethernet cable or wireless card is a must, but besides that and your power cord, there isn't any other cable you need to have for your computer to work properly.
Accessing printers on campus is really easy. We have computer labs in the Library, the Hafey-McCormick Science Building, and Mercy Hall. All of them have printers for students to use at no cost, and they are all open relatively late too. I didn't bring a printer with me during my freshman year, and I had no problem at all. For my sophmore and junior years I did bring a printer, but that was simply for convenience purposes. You definitely don't need to bring a printer with you to campus, and you should have no problem accessing the ones that are here.
Let me know if there is anything else I can help you with, or if you have any other questions! OT is a great program, and you'll definitely be happy here!
-Erin Rossick (rossicke@misericordia.edu)