As Tomasz wrote - AmiQuote is an ADD-ON to AmiBroker. You need to have AmiBroker installed to use AmiQuote.
Have you tried installing AmiBroker in
C:\Users\YourUserName\AmiBroker directory? I install some programs in such location, to avoid saving my personal or config files in some directories who knows where (just because the program didn’t have rights to save files in Program Files directory). You are most likely to have access rights to install programs and save files in this folder. It may be worth trying…
But what else did you expect from the support? In case you didn’t notice, you received two detailed answers not from an anonymous “support team”, but from the owner and developer of AmiBroker, who was trying to help you and provided you with some useful hints. If you are so disgruntled, try receiving support from Bill Gates with regards to Windows’ access rights