Even if the psp had a text editor you wouldn't want to type an essay on it. It doesn't have a keyboard so typing is frustratingly slow. Think cell phone keyboard but you have to select which key with arrow keys. The 770 supports abiword which I've used successfully to work on essays in class. Abiword supports .doc files directly, which may be an advantage over the mylo's text editor.

You don't mention what authentication your university requires. My university supports both web-based authentication and WPA EAP. I used the web-based system for a while before spending the over an hour trying to make WPA work. After I got it working I found this page. I like having my traffic encrypted and it's nice to not have that nag screen every time I connect. I don't think the either mylo or psp support WPA EAP.