First, you need the SDK installer and MoHAA Patch v1.11 installer (really! and please don't laugh!). You will also need Winzip or another archiver that can extract files from EXE files.
OK. Find the SDK installer and the patch installer. Right click on the SDK and select Winzip -> Open with winzip. Extract it anywhere you want, but remember where
Next, do the same for the patch, but extract it to another directory. Go to the directory where you've extracted the patch and copy setup.inx file to the directory where you've extracted the patch. Confirm overwriting and run setup.exe. Follow the instructions. Setup will show some weird messages, like 'You already have MoHAA 2.55', but ignore them and always click yes or continue - it won't damage your system and MoHAA will still be 1.11 And that's it! You have the SDK 8) Cheers
Rookie One
, and he couldn't do it! I told him what I did and he installed it without any problems 