Steve, you can do what you want quite simply using a free tool called resource hacker:
http://download.cnet.com/Resource-Hacker/3000-2352_4-10178587.htmlLoad up resource hacker, open the PDW.exe file you want to modify, then in the left hand pane of resource hacker scroll down to the string table entry. You'll notice two subentries, 37 and 38. Click on "37" and the "1033" entry underneath it. In the right hand pane you'll see the string for the title bar enclosed in quotes. Change it to whatever you want being sure not to disturb the quotation marks. Then press the recompile button above the right hand pane, and then using the file subentry in the title bar of resource hacker save the modified PDW file as [whatever you want].exe. When you execute your modified file, the title bar should show whatever you changed the string to.