Administrator password unknown – not same as primary user password

When fixing a problem with my mail I created a new problem.  I created a new account (or alias) - I can't remember which one and made it the administrator.  Eventually I fixed my problem and have my old email address and password back (as a primary user), but cannot alter anything on the computer as the administrator email address (or alias?) I created pops up and asks me for a password - no password I have ever used works and my current password doesn't work either - I tried just entering too and that didn't work - I have tried deleting this administrator account (and as an alias) and reinstalling it but it doesn't fix the problem.  Every time I log on the pictures of both the administrator and the primary user pop up - I can still use the primary user as my password opens that account but no password opens the administrator account.  The microsoft help desk told me not to pay for a program that unlocks the administrator password as these are not endorsed by microsoft.  I guess I can just ignore it - but can I change my windows settings via outlook webmail if I really need to?  I am not good with technology so any help would be most appreciated.