Revise these sentences to eliminate jargon and to use short, familiar words.
1. When the automobile company announced its strategic downsizing initiative, it offered employees a career alternative enhancement program.
2. Any alterations must be approved during the 30-day period commencing 60 days prior to the expiration date of the agreement.
3. As per your request, the undersigned has obtained estimates of upgrading our computer system. A copy of the estimated cost is attached here to.
4. Please be advised that this writer is in considerable need of a new computer.
5. Enclosed please find the proposed draft for the employee negative retention plan. In the event that you have alterations which you would like to suggest, forward same to my office at your earliest convenience.