I am using a style file that I found for a CV but I need to include the cover letter with the CV in a single file. So I am just putting the cover letter on the first page. The margins though are too small on the right hand side. So how can I override this and put more space on that side?
It would be easier to make your CV and cover letter separate documents and use a PDF utility to combine them. The PDF utility could be LaTeX with the
Matthew's suggestion is the preferable solution. However, since version 5 of geometry it is possible to alter the page dimensions within a document. The package manual has the details.