GadGets

PLeaseeeeee help me out!!!
Which one pay more? Also my dream is to have a company of computer and which one can best fit in this catagory?

I have an eMac which is currently connected to a printer with a usb cord. I am trying to sync my computer to a different wireless printer and have been unsuccessful, any advice?

I bought my sister the casio wk210 – she wanted a keyboard piano, so she could plug it into the computer, and her score would appear while she is playing. That way, if she was playing a song on the piano, instead of handwriting each note on paper, the computer would write it for her. Does anybody know what software I need to get in order to let the computer do this?

I have AT&T DSL with an internet speed test of 2.5. My computer processes everything to slow.

I want to study computer science/IT at a university. However I am not sure what is it all about? Someone told me that there is software/hardware IT but I don’t know what that means. If you ever studied computer science could you please tell me more about it, as well as job prospects? Thank you!

Lets say one computer has a virus & the other does not can the infected computer transfer the virus to another computer in the same home network?

My hard drive is full of old home movies and pictures, and now when I try to plug it it (on any computer) it says I need to format it. How do I copy these things to my computer without formatting?
I tried rebooting with it plugged in, and nothing happened. It’s never been used with a Mac. I’ve saved from a combination of five or six different computers, never having any trouble with it.