Now right click on the 1033 number then select Save [Bitmap : 172 : 1033] ... from the dropdown menu, after that save the splash somewhere, I have saved it on C:\ drive with the name splash.bmp but you can save it wherever you want it doesn't matter where.
After you click Replace Resource... this window will open then click Open file with new bitmap...
Find the splash.bmp that you have edited before double click on it then click Replace button and you are done now.
For the end save your work in ResHacker don't close yet click File then Save. Save the hammer.exe with a new name or replace it with your old one and place it in the VHE installation directory. Start Valve Hammer and look at your personal start splash logo.
All the programs that are used in this tutorials are free, but the authors have copyrights to them so any change on them may be illegal in your country. So anything you do with this KNOWLEDGE you're on your own, I do not take any responsibility for the use or misuse of it. You can freely share this tutorial as long as you give credits to me and for the end DON'T and I mean it DON'T publish the edited VHE because you might get problems with the law. Decompiling software is illegal in most of the countries.