It probably happens to everyone. You dash out of the office at the end of the day, only to find out later that you left a vital file on your work computer. Rather than smack your forehead and say, "D'oh!" you can use Nokia's Files on Ovi to retrieve the files using your mobile phone.Files on Ovi has entered a beta trial. The software could be a lifesaver, depending on how forgetful you happen to be. Here's how it works.

First, sign yourself up for an account. Right now, since Files on Ovi is in beta, you can only get a 90-day trial, which happens to be free. You need to download a piece of software to your PC. This piece of software then reports to Ovi's servers the files that are stored on your machine. Then, using any Web-enabled device, you can use Ovi's servers to search through the files on that PC.

Files on Ovi lets you do more than just search. You can preview your files, such as Word or Excel documents, as well as download them to your mobile phone. You can also upload files to be stored and later retrieved from your PC.

This wouldn't be very practical if it didn't work when your PC is switched off. If you want to be able to access certain files when your machine is asleep, simply mark them as "anytime" files, and Files on Ovi uploads them to the cloud. Once there, they can always be accessed, and even shared with colleagues or friends.

The base account comes with 10 GB of storage, which is a decent repository for Word documents, and even photos and other media files. Nokia has not provided specifics on how much storage will be available once the service is live.