None of the ASPI DLLs will work except the Adaptec one (and that's not recommended for Windows XP etc) because they're just wrappers for SPTI.
If all else fails you could alway just reset the local machine's Admin password via any number of tools created for such a purpose.
It takes about 2 mins to do.
There might be a way to save the existing admin password hash somewhere and then put it back again when you're done, I don't know - otherwise any login attempts using the local admin account with the real password will fail.
Once you have access via the local admin account, login, install burnrights or whatever and be on your merry way