You can also try to run ReactOS under emulator (such as QEMU). It is not necessary to install it on hard disk partition to have a look at it. Your nick looks like Russian last name. :) If you know this language you can ask your questions at that forum. Точно, я из Росссии :) Хочу поставить ReactOS ...

Thanks everybody, but this all seems to be too complicated for me

I used to install Wndows 98/95 coping distributive on hdd, then boot from DOS floppy and run W98 setup program from DOS prompt. But I can't do the same with ReactOS

1.I cant boot from USB stick
2.How I can transfer CD ISO image onto this stick?

I want to copy some installation files in temp. folder and run it over Win2000 to upgrade it to ReactOS. My notebook has no CD drives at all. How can I install ReactOS this way?