I don't think it's important to know where the program went, but how you run it. Usually, you run it by typing the name of the program on a terminal (in your case, by typing "wine").
Usually, the executables goes to /usr/bin, /usr/local/bin, /sbin/... etc. There's a command that checks for where those things could be:
A last tip... avoid wine unless really necessary. It's the beta of all beta programs. Try using a native Linux programs because 1 - It works and 2 - unless it's for games, Linux usually has a equally good or even better replacement then Windows applications. This list would get you started: