That's a huge organisation! The figure of 750,000 suggests you work for the US Postal Service.
Only Wal-Mart and the US government employ more people while all other organisations employ far fewer, e.g. McDonalds 450,000.http://en.wikipedia.org/wiki/List_of...s_by_employeeshttp://money.cnn.com/magazines/fortu...ees/index.html
Perhaps the simplest answer to your question is for you to pay for the upgrade and you get reimbursed by the IT department?