42 Providing temporary use of on-line non-downloadable graphical user interface and networking software for collaboration with and multi-party access to documents, emails, videos, data, files and other information; providing temporary use of on-line non-downloadable software for collaboration with and multi-party access to documents, emails, videos, data, files and other information; providing temporary use of on-line non-downloadable software for allowing field service and job site workers to send, update, access and receive data; providing temporary use of on-line non-downloadable software for preparing and sending invoices and receiving payment over computer networks, intranets and the Internet; providing temporary use of on-line non-downloadable software for preparing and sending advertising and promotional media over computer network, intranets and the Internet; providing temporary use of on-line non-downloadable software for preparing and sending service and maintenance reminders over computer networks, intranets and the Internet; providing temporary use of on-line non-downloadable software for analyzing and diagnosing residential, commercial and institutional equipment and system failures; providing temporary use of on-line non-downloadable software for multi-party access to databases comprised of documents, emails, videos, data, files and other information