Minimum computer requirements

[New to embroidery....]

Hello ladies and gentlemen.
I am new to machine embroidery (I do not even have a machine yet)
I am buying a Brother PE-770. I have to buy a computer, since all I have right now is a Chromebook.
Can anyone tell me the minimum requirements I should look for in my new computer? 
What operating system and would it be better to have a laptop of a desktop?  My computer budget is $450.
Thank you in advance for your help. 

[starchaser]

Guess that's quite an old thread, yet here are my two cents - usually embroidery software is not that demanding. Though, it would benefit from high resolution screens like any other graphics arts software. For instance, I use Embird and it's minimal requirements are: 1 giga byte RAM, screen resolution 800x600, True Color display mode. So you can buy almost any laptop on the market and you'll be more than fine.