To change a Windows Movie Maker file into a .wmv, all you need to do is Publish/Finish the project in the program. Click on the Windows Movie Maker How-To link posted in the Related links section...
You cannot change a Windows Movie Maker file (.MSWMM) into any other file format, including an ISO (which is simply an image that includes all the data of files contained on an archived CD/DVD, or...
Open up the windows movie maker file in Windows Movie Maker and then Go to File->Save Movie File. Once the dialog box opens, choose My Computer and click next. Name your movie and choose a place...
Windows Movie Maker does not accept .mov files. You will need to convert that file to one compatible with the program before you can import and edit it: asf, .avi, dvr-ms, .m1v, .mp2, .mp2v, .mpe,...