How do you upload images directly into TinyMCE?

I love elgg but there is something that I cannot do with it that makes me want to delete it and give up. 

I need a Tiny MCE (full features) so I can edit my pages the way I like and I also need that when I want to insert an image, I can get it from my computer and not have to enter a URL to get it. It's not convenient at all. 

So far I  have found plugins that could do one but not the other. I have tried several configurations of different plugins and still cannot get it to work the way I need it to work. Any suggestions on  how I can have a full Tiny MCE with the possibility to upload images from my computer?