I have an awful memory & am 800 places at once. My to-do list is spread across my whiteboard, pieces of paper, two notebooks, and e-mails that I send to myself at night.
But there's hope! There's a better way! There's "Backpack"!
I have been using this for... well... just a day, but I really like it. Presuming you have a decent browser it should work fine for you.
Backpack (it's free for small stuff)