Considered doing this myself actually. I personally was thinking of
creating a program that allowed you to deal with the process on a
project basis, allowing you to enter the ingredients, and set up a
timetable for fermenting and racking. The program could then have a
global diary, letting you know what you need to get done in a certain
week or on a certain day......i.e.

Sat 14th Feb - Rack banana to secondary
Rack tomato and basil (2nd Rack)
Bottle Shiraz
Buy wife flowers!!!

Allow for a simple journaling feature, and then when it comes time to
make the same wine again, you can fire up the old project and start it
over. This time, however, all your useful comments and tid-bits will
be there, so you can tweak a recipe over many iterations.

Nice to have a few utility functions too. For instance, It'd be nice
to have something to calculate the likes of:

If I have 600ml of strawberry juice from a couple of cans of
fresh strawberrys that has a PA of 22%, how much water and sugar do I
need to add to make a galon of 13% wine. Obviously it can't be too
accurate, as the strawberrys themselves could vary greatly in sugar
content, but it could be as accurate as necessary for my purpose.

The comment about not eveyone owning a windows PC is also worth
bearing in mind, which would lead me to suggest that you either use a
cross-platform language like Java, or you use a cross-platform library
like wxWindows....I'd personally use the latter. Are you required to
use a specific language for your course?

j.