I recently bought iWork ’08. I put the DVD into my drive, but when I double-clicked the installer, an error message said, “No default application specified to open the document iWork08.mpkg. Choose application.” Why can’t I install this program?

The answer after the jump.

I backed up a whole bunch of DV files to a data DVD. But when I play those DV files from my external DVD drive, they hiccup and skip as if they’re missing frames. But when I copy the DV files back to my hard drive, they play just fine, with no dropped frames after all. Any ideas?

Answer after the jump.

My mom just bought her very first iMac, and she loves it! However, she keeps accidentally pulling her icons out of the Dock. Is there any way that I can lock the Dock?

Find the answer after the jump.

I was excited to try out the new MobileMe push service from Apple, so I made a change to my calendar on my MacBook and then put my computer to sleep. Several hours later, the change still had not appeared on the me.com website or on my iPhone. I thought this was supposed to be instantaneous?

Find the answer after the jump.

I like how iTunes automatically sorts my playlists alphabetically. However, iPhoto doesn’t do the same thing for my photo albums. I have to manually drag-and-drop each one of my albums into alphabetical order. Is there a way to fix this?

The answer after the jump.

XMenu lets you create a custom menu in your menubar to store your favorite files, folders, and applications.

I remember back in the Mac OS 9 days when we could customize our Apple Menu with any folders and files we wanted. Is there any way I can get that functionality back in Mac OS X?

iMovie ’08 lacks the chapter-marker feature found in iMovie ’06, but you can still add chapters to an iMovie ’08 project by using GarageBand.

Purchase a movie from the iTunes Store, or extract a film from a DVD with HandBrake, and you’ll end up with a file containing chapter markers that you can use to skip to specific parts of your video in iTunes, on the Apple TV, or on an iPod. Wouldn’t it be great if you could add such markers to your own home movies too?

Mouseposé makes presentations easy to follow by highlighting your cursor and visually displaying your mouse clicks.

Is there any way to download a larger cursor for my MacBook? When I’m giving a presentation, it’s difficult for my audience to keep track of where the pointer is on my screen because it’s so small.

Check out the Tip of the Day after the jump.