I'm a Visual Studio 2005 user as well, but people that use my project, would like CodeBlocks support.
My first problem is that I cannot RightClick on a virtual folder and add files to it. I have to add files to the project( they automatically go into a source folder even though I have the 'Categorize by file types' unchecked ) and then one by one, drag them to the virtual folder I created. I would be happy to do this process, if I could multi-select files in the ProjectTree and move them as a group to a virtual folder, but I think it would be easier just to allow a RightClick option on VirtualFolders for doing this.
I also noticed a bug. I create a virtual folder, added files via the process stated above, then I noticed the 'Display folders as on disk' was checked, so I unchecked it. I then did something really weird, so I re-checked and all the files I'd added to the project and moved to the virtual folder were gone. The virtual folder was still there, but the files weren't.