Software Installing

This is a common error message when installation fails.
go to http://support.microsoft.com/support/sql/content
if you cannot reach it this way go to search and type in Microsoft SQL Server 7.0 Setup and it gives detailed setup instructions.

How much available space do you have on the drive you will be installing to? Sometimes these programs require double the minimum storge requirements for the install (because they place files in a temporary space and then perform the install).

See if there's an option to direct the install to a temporary location on another drive if space is a problem.