Desktop Publication Programs Come with Many Distributions
But you may have to learn how to use different software. OpenOffice.org is widely used, is available for Windows and Linux, and will read/write Word, Excel and Power Point file formats. Some of the programs may be different from what you are used to using so be sure to check the Program Equivalents page and see if there is a Windows version you can download and try out.
For Web development, NVU is fantastic.