Well, acctually I have nothing. I just have a couple of theoretical infomation. For example I find out that I should use something like thread, becauose there can run only one proces on the procesor at the same time. I would like to make it work under winXP and this OS offres lot of resources that I could use (API, VCL, OLE ... or what), but I dont know how does it work. So I ve got lot to learn yet, so I can use them. Or there is also another possibility, to create my own procedures, functions, components and not to use ones that OS offers.