There are many great sites on the World Wide Web but trying to actually find those great sites can be a frustrating experience. We have compiled a list of Websites that we have found to be helpful resources of information. When you click on a link, a new window will pop up. Close the window when you are ready to return to this page. The Internal Revenue Service Home of the IRS on the Web. The IRS has definitely done a nice job on their Website. Check IRS Refund Status Track your tax return through the IRS website. Minnesota State Department of Revenue Client Sites CMFN FTP Service Home of the Casey, Menden, Faust & Nelson, PA file transferring site. Use this site to transfer files to us. Please contact us for a username and password to access this page.