ftp in FireFox

I dont find the plug-ins to be as much as a problem as I do the ftp capability of IE. I use Firefox as my main browser in windows but when it comes to drag and drop cabability in my ftp locations I still have to use IE. I think this is because IE is based from its file manager cousin, explorer.exe. that is my main gripe about it. Other than that, the tabbed browsing and the added security it adds is more than enought to keep me using it.