Nadya,
>I am using normal font and theme says: Modified theme. I asked this question on Russian forum and was told, that in some themes the controls become slightly bigger, as well as form's title bar. I notice this effect myself. But what we should do about it? BTW, I can send you screen shots, if you like.
There are several sysmetric() calls you can make to determine the size of things like the titlebar and scrollbars and use that information in some code that could tweak your form .Height and .Width as well as moving resizing the other controls on your form.
It's not an easy problem to solve.
Please don't email me any screenshots because for the next few days I'll be on a dialup connection. If you have a website you can post them to and send me a link I can take a look and maybe offer some other ideas.