I knew most of this stuff already; my Google-fu is strong. But here's a nifty trick I wasn't aware of, and I bet you might not know either - searching by date range:
12. Search within a specific date range: You can narrow you search to only a very specific window of time, i.e., you’re looking for Macromedia Dreamweaver information only between August and October 2005.Bonus: There's a downloadable PDF Cheat Sheet containing all the tips.
AskJeeves: macromedia dreamweaver betweendate:200508,200510
MSN: somewhat confusing to do; MSN has provided a Search Builder pull-down below the main search query box that allows you to stack your results from “updated very recently” to “static” (page hasn’t been updated in a while).
Yahoo: on the Yahoo Advanced page there is a drop-down menu titled “Updated.” You have four choices: search for content “anytime”, “within the past three months”, “within the past six months”, “within a year.”
Google: macromedia dreamweaver daterange:200508-200510
Seek and Ye Shall Find: Top 20 Search Engine Helpers - Lifehacker