That is very odd then because whenever I try to run the installer, the computer asks for the admin password.
The only reason it usually does that if it's trying to install something to the C:\program files...
It seems that you are not the owner of the PC, i.e. you try to install it on a PC at work etc.
If thats the case, you would need to install it on a PC where you are the owner or admin. After installation, you could zip what you installed and take it to the PC, where you dont have the rights to install somethings... should work without a problem, just need to adjust the pathes for the directories.