I haven't tried this one, but you can check it out if you want: Instant Banner Creator
I use imagechef. just google imagechef in fact I think it may be imagechef.com.
either way it does show like "made by imagechef" on your banner or image, its still a really easy and fast way to make a custom banner for cheap niche blogspot blogs.
whenever I'm making a quick high paying niche blogspot blog I just remove the top bar that all blogspot blogs have by editing the HTML and add one of those corny free banners and it generally looks alright. It's great because I don't even fret over it saying "made by imagechef" seeing as the people already know I'm cheap because im using blogger ... lol.
Thanks for he software mate..Am also searching a software for a long time....
Try logoeyes, its really good and you have your logo done in a matter of minutes. After downloading it you can edit the logo using photoshop and further perfect it.
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I purchased software called "The Flash Ad Creator" this has the advantage of built-in useful graphic elements, and it's very easy to produce professional-looking graphics with it.
If you start with the Gimp or PhotoShop you have a blank canvas and a complex piece of software to master, so I don't recommend them, leave them to the pro designers. Also, be aware of legal issues if you use educational software for commercial purposes.