woeko,
MyEclipse doesn’t support an integrated MagicDraw. That being said, there are a lot of users who have integrated 3rd party plugins successfully. After adding the plugins for MagicDraw, if you are able to see MagicDraw and you aren’t able to create a new MagicDraw – Project. I would suggest you to click on Window > Customized Perspecitves. This will open the Customize Perspective window with default Shortcuts tab being selected. Select the Submenus: New, select Magic draw. Also look for Magic Draw in the next tab for Commands.
Where can I download the Eclipse plugin for MagicDraw? Do you have a link to update site for Magic Draw? I will try this at my end.