Okay Fealit, I made some changes you should test to see if the SQL Server part is working correctly or not.
I added a file called 'sqldb.data' to the installation. You can edit it with notepad.
The current contents of the file are:
/* Please do not change the order of the above parameters */
/* Do not insert spaces before or after the '=' sign */
/* You don't have to use quotes if a value contains spaces */
I hope it is self-explanatory. If you have questions, contact me!
I couldn't test it at all since my PC at work doesn't have SQL Server, but I think it should work if you set the parameters correctly. I hope to hear from you soon about it