Recently finished a logo for my video game forum. Please tell me if you like it. the site is SpazGamz.com.
I'm checking your logo from my work PC at the moment. This is an elder version of IE(V.6). You should be aware that all IE versions older than 7 cannot display PNG's correctly. So at my screen the logo looks funny. The text is there, but the transparent background is not transparent but simply a grey box around the logo itself. I dont know how many of your visitors use old versions of IE, but I would definately suggest merging your logo with the top banner in photoshop(or whatever you use) instead of making it two different images. An alternative would be simply using a .gif format instead. This would be viewable by all browsers and your logo would look the same. (Gif can still show transparent background, PNG is only nessecary if you want to make a fluent transition to transparent - as for example a glow effect).