Dell (Nasdaq: Dell) announced Friday it will begin taking orders this weekend for computers pre-loaded with Microsoft's Windows Vista operating system.

Dell said it is building products to deliver an optimal experience on Windows Vista.

“Dell makes it easy for customers to custom order the right desktop or notebook and unleash their imagination, increase productivity and embrace today’s digital lifestyle,” said Alex Gruzen, senior vice president Dell’s Product Group.

In order to ensure that the new software is compatible with Dell's offerings, the computer maker said it has spent more than 100,000 engineer hours testing the new operating system.

The initial roll-out of Vista-installed systems will be in English, French, German, Spanish and Japanese, with additional languages to follow in coming weeks.

Shares of Dell closed Friday at $23.73 on Nasdaq Stock Exchange, falling 1.74 percent, or $0.42 cents.