WOAH Congratz for V2

Well I need help from you guys even thou i can do it myself =.= Busy with work

I got a budget of like 500max for a rig

Usage: NO GAMING, NO TYPING, JUST PURE FOR PRESENTATION JUST TO HOOK UP A PROJECTOR
Case: best if M-ITX or M-ATX
MOBO: cheapest as possible
Proc: Cheapest as possible (brand new please)
Ram: is 2gb enuf? I scare lag
HDD: 250gb
Monitor: cheapo 13inch
mouse and kb: Cheapo one like rm10 each

Please recommend as it's for tuition use.
Thanks