Do you spend too much time at the start of a task searching for critical documents? One quick trick: when you put the task on your calendar, also write in the notes section where the document is filed. For example, let's say I set up a marketing meeting regarding Project X in another state with a resource working on a small but critical part of the project for 2 months from today. I know when I set up the meeting that we'll need to discuss the marketing results up to that time and the plans going forward. He may also want some information on the vendors.
When I put the meeting on my calendar 2 months ago, I write in the notes section, "F:/project x/marketing & F:/vendors; bring results & plans".
Now when it's time to pack for my trip, I know exactly where to go to get the several different files I'll need. I also try to match the names on my paper files to the names on my computer files. That way, if I need to grab something that is printed out, I'll know to also get that same file from my cabinet.
Hope this helps!