Oh I have to proudly show off my work :D After 3 days and 30 hours (I know, I'm really slow) I have the almost final product :) (well, like 1/20 part of my current project, but... read bellow)
The trick, why it didn't take me only a few hours of coding is that I don't have anywhere anything hardcoded. :-) The functions I've written should work on other forms with any number of controls, tabs and so on. So the next, almost the same window, would be done in like 5 minutes :-)
Proud of myself :D Don't now where to boast so sorry about that :D