Hello everyone,
I just installed Lion and was dissapointed to find that I could not connect to my macmini server (running snow leopard) via screen sharing like I used to... pressing command K and connecting to the server. But I found a work around:
1. Press Command K
2. Remove the vnc:// in front of the network ip address of your machine and put in afp:// instead... so an example would be afp://192.168.1.100
3. Login with an admin account
4. It will ask which shared drive to connect to on the computer, select anything
5. When it opens the window for the shared folder you just selected click on the little button on the top right of the window that says Share Screen
6. It will ask you to login again
7. Voila! You will be connected
Note: If you can see the computer on the left side navigation bar when opening any window on your computer, then a much easier variation for Step 1-5 is that you can just click on the machine on the left navigation bar then click Share Screen on the top right of the window, and then just login.
Hope this helps someone out there!
-Carlos