How to make symbolic link that works!

I admit, I have some problems grasping the use of symbolic links in Linux. It just never works for me, no matter what I type. So here is the best piece of advice I found on this, ever:

How do I create a symbolic link?

ln -s [TARGET DIRECTORY OR FILE] ./[SHORTCUT]

For example:

ln -s /usr/local/apache/logs ./logs

This points a symbolic link "./logs" to "/usr/local/apache/logs" source

Why this is cool?
Because it creates a new file called "logs", which links directly to the directory you want to. I used it with Wine, because it didn't allow me to install a game in other directory than home, so what I did was

ln -s /media/D/dir ~/.wine/dosdevices/t:

And voila! It worked! Here t: is a letter that I didn't have before - it created this new shortcut "file" and this time, the link was fine and the game was installed on another harddrive (which was the actual point of the exercise). Weeee!