SkyDesk, an Internet-based storage company, has signed and will soon announce a three-year deal with high-speed Net access firm Excite@Home to offer its @Backup service to @Home users. The company has reached a similar deal with dial-up ISP EarthLink. Formerly known as @Backup, SkyDesk will become the exclusive file backup service for @Home and EarthLink users. SkyDesk allows users to remotely access their computer files via the Web.