Thanks, Snarky. The font I used for 'Comrade' is called "Demonized" and I got it here (along with a whole bunch of other freeware fonts):
http://www.fontfreak.com/index3.htm
Click on 'PC Fonts' on the left hand side and then click on the letter 'D' at the top. The text is found in the 5th row from the bottom.
Since the text has a forward slant to it, it doesn't lend itself well to curved text IMO. So I just use it for large straight text.
I use Photoshop for making these logos as do a number of others on the boards. But there are a few who use CorelDraw (Cuss, Dbacks, Le Grande Orange, StorminZ for example). Although I have never used it, CorelDraw is an excellent program for making logos, as can be seen from their work here.
I can't really comment on your file saving issue though, as I'm not familiar with CorelDraw. However, .png files are one of the preferred file formats for the new game (logos will still be 150x150 pixels in size).