i might sound stupid but new to this
launched wc3 but it only launches in a small window and will not let me open the window to full screen any suggestions

alt-enter to go to fullscreen.

You can change it to go to fullscreen on startup by editing dosboxWC3.conf using notepad. The file is located where you installed WC3. To set startup to fullscreen change the line "fullscreen=false" to "fullscreen=true" without the quotation marks. save the file and exit.

that works nice thanks man