Q:

How can I burn a slideshow that I made in iPhoto on my MacBook Pro onto a CD?

A:

You can export the slideshow as a video (a QuickTime movie in Apple parlance) and then burn that video to your CD.

Here’s how: In iPhoto, after you’ve created the photo slideshow, with titles, music and so forth, click on the “Export” button at the bottom of the slideshow-creation window. Choose an option for the resolution of your movie and click “Export.”

Then, choose a destination on your hard disk where you’ll temporarily store the movie. Next, insert the recordable CD, and copy the movie into the window representing the CD. Finally, click on the “Burn” button at the upper right of that CD window.

Q:

I have recently gone almost all Google: I moved my business email to Google, am using Google Docs, etc. I am in need of a new laptop and am considering a Google Chromebook. My question / concern is: What about programs I may need, such as iTunes, or some printer / scanner software, or an accounting suite? Will there be room for some of these programs and if so, will they operate on Chrome OS?

A:

Google’s Chromebook doesn’t run traditional programs. It is designed to only run so-called Web apps—app-like Web sites, from Google and others, that operate inside the Chrome browser. Also, it has very little local storage and depends on the Cloud—remote Internet servers—for most storage of apps and data. So, the bad news is you can’t install iTunes or your favorite Windows or Mac accounting suite on a Chromebook.

The good news is Google and others are churning out more and more Web apps for Chromebooks. For instance, there are a variety of music and accounting apps that might meet your needs. You can check these out at chrome.google.com/webstore.

Q:

I recently switched from BlackBerry to an Android-based phone. Do I need to install any anti-virus or firewall apps on an Android smartphone like what we do on a PC?

A:

It all depends on your tolerance for risk, your tolerance for running security software, how adventurous you are at downloading apps—and who you believe. Various reports have claimed that Android malware is surging, but last week Google disclosed a fairly new technology called “bouncer” that it has been using internally to weed out harmful apps. And the company claims there has been a big drop in malware in its app market in recent months.

My recommendation would be that if you are a safety-first person, or someone who experiments with lots of apps from companies you don’t know, you should consider using security software on Android.

Email Walt at mossberg@wsj.com.