Olly has a nice feature, that recognizes parameters of many many APIs. Is it possible to add new definitions to Olly? For example, i want Olly to show me parameters of some visual basic functions, where I know parameters, but don't know how to give it to him. Thanks.

Read the "Custom function descriptions" topic in Olly's help file.

Thanks very much, this was exactly what I was looking for

you can find an example here

http://www.woodmann.com/forum/showthread.php?t=10437&highlight=.arg

So I started digging in Visual Basic 6 and I made definitions of some VB functions (especially those, that you will meet most in crackmes etc.). Im still working on it and learning, but if anyone wants, I have attached my common.arg file and you can copy some definitions from it. I have these definitions also in Excel (with description), but it's still only cca 10% functions from MSVBVM60.dll.

BTW, Olly has some serious limitations in creating custom functions. VB works with objects and it's impossible to point him to something like [address+8].