memilm,
Here's what I could do for now: When saving a setting the inputbox now by default displays the name of the currently opened custum setting (if any).
http://home.wanadoo.nl/sfinx98/progs/picker.zip
The other thing is more complicated. I assume you mean that after saving a setting you want to see its name selected in the dropdown list. Before I do that I am going to make a check for the dropdown list to compare the aquarium's settings with the custom settings when they are selected. When the slots match the text should not become red like it does now, but black. Funny that nobody mentioned this flaw.
--edit--
All done, v.1.1 build 7 is up!