Online travel agent Orbitz on Tuesday threw a challenge to rival companies when it said it will guarantee that tickets purchased on its Web site are the cheapest.

The company said it will give a $50 voucher to any customer who buys a ticket on Orbitz.com and can find a published fare for the same flight that is at least $5 cheaper, excluding fees.

The offer is valid with tickets purchased both from Orbitz.com and from the Orbitz for Business site. The company offers flights through 455 airlines. The offer is valid for domestic flights only.

To qualify for the offer, a customer must fill out a claim form, available on Orbitz.com, on the same day he or she buys a ticket from the online agent. The $50 coupons will be redeemable on any future flights, hotels, rental cars or vacation packages purchased on Orbitz.com.

Apple® today introduced iPod® Photo, the newest member of the iPod family that lets you take your entire music and photo library with you wherever you go. iPod Photo holds up to 25,000 digital photos alongside your music library and displays them on its stunning high-resolution color screen, allowing you to scroll through your photo library almost instantly using iPod’s patent pending Click Wheel. iPod Photo lets you combine your music and your favorite photos to create magical slideshows on your iPod, and features TV-out for sharing your slideshows on big screen televisions and projectors. iPod Photo comes in 40GB or 60GB models which hold up to 10,000 or 15,000 songs, and its extended battery life gives users up to 15 hours of music playback or up to 5 hours of slideshows.

Featuring Apple’s patent pending Auto-Sync technology, iPod Photo makes it easy to automatically download your entire digital music and digital photo library onto iPod and keep it up-to-date whenever it is plugged into a Mac® or Windows computer using FireWire® or USB. Mac users can Auto-Sync their iPod with their photo library in iPhoto™ and Windows users can Auto-Sync their iPod with their photo collection in Adobe Photoshop Elements, Photoshop Album or their My Pictures folder. iPod Photo works with iTunes® 4.7, released today, providing music fans with digital jukebox on either a Mac or Windows computer and access to the iTunes Music Store, the number one digital music service in the world.

Pricing & Availability The new 40GB and 60GB iPod Photo models will begin shipping today for a suggested retail price of $499 (US) and $599 (US) respectively, through the Apple Store® (www.apple.com), Apple’s retail stores and Apple Authorized Resellers. iPod Photo includes a dock with audio and video out, earbud headphones, 1.4m AV cable, 1.2m 30-pin to FireWire cable, a 1.2m 30-pin to USB cable, AC adapter, black carrying case and a CD with iTunes 4.7 for Mac and Windows computers.

iPod Photo requires a Mac with a FireWire or USB 2.0 port and Mac OS® X version 10.2.8 or later (v10.3.4 or later required for USB 2.0); or a Windows PC with a FireWire or USB 2.0 port or FireWire or USB 2.0 card and Windows 2000 (with Service Pack 4 or later), XP Home or Professional.