This is the quickest way I know of to insert stress marks over your Russian vowels (а́е́и́о́у́ы́э́ю́я́) in Windows 2000 or better (it also works on Windows 7). Unfortunately it doesn't seem to work in OpenOffice (I'm not sure about Microsoft Word), so if anyone knows of a better way, please share!

1. Download and install Microsoft Keyboard Layout Creator. It's a handy free program for editing keyboard layouts.
2. Download this file and open it in MSLC. Alternatively, you can start from scratch, or use the "load existing keyboard" option in the "file" menu.
3. Edit the layout if you want to.
4. In the "project" menu, click "Build DLL and setup package".
5. Open the directory and open the "setup" file to install it.
6. When your keyboard language is set to "Russian", the language bar should have a small keyboard icon on it, click this and select the custom keyboard layout.
7. You should now be able to type the characters а́, е́, и́, о́, у́, ы́, э́, ю́, я́, А́, Е́, И́, О́, У́, Ы́, Э́, Ю́, Я́, as well as «, », ´ and —, by using the alt gr key.

Not sure if I missed out any steps here, but I think that's all. Any questions, just ask