We’ve seen a few screenshots of Office 2010 in action, but considering that the new Office is debuting today if you’ve got an invite (most of us don’t), let’s take a closer, full-motion look at what’s coming in Office 2010. Luckily Microsoft has been very social with their Office 2010 introductions, and YouTube is full of introductory videos to Office 2010 . Check out the ones that most likely matter most to you below.

Lifehacker has a step-by-step on How to Dual Boot Windows 7 with XP or Vista . Ready to try the Windows 7 release candidate (until the real thing comes out in October 2009)? Here’s one way. Posted in Windows 7 Tagged: 7, boot, dual boot, Vista, Windows, XP

Lifehacker has a post on the Top 10 Ways to Clean Up Your PC and speed it up. Posted in Help, Microsoft Windows Tagged: Help, speed, up, Windows

Lifehacker has post on how to Clean Up and Revive Your Bloated, Sluggish Mac for Mac OS X system. Posted in Help, Macintosh Tagged: Help, Mac, speed

Lifehacker has a post on how Killer Add-ons Make Songbird So Much Better . Songbird is the younger sister application to Firefox and Thunderbird and other Mozilla freeware, and it handles the media playing. These add-ons pump up the functionality of Songbird. Posted in Freeware/Shareware, MP3, Music, Sound Tagged: media, Music, player, Songbird, Sound, viewer

Lifehacker has a post about how Mac4Lin Gives Linux Desktops the Complete Mac Look . Now here’s an identity crisis — you have Linux (because you like to save money?) but you want a Mac (which costs more money) so you simulate the look of a Mac on a Linux computer. Mac4Lin is the freeware answer. Posted in Freeware/Shareware, Linux, Macintosh Tagged: freeware, Linux, Mac, Mac4Lin

Lifehacker has their Five Best Free System Restore Tools – Disk imagers . You can find freeware to image your XP/Vista system in here somewhere. Posted in backups, Freeware/Shareware, imaging Tagged: backup, freeware, imaging, Lifehacker, Restore