Not able to log in; WP doesn’t recognize password OR email

Hi,
When I try to log in to my blog admin pages, I get a message saying “ERROR: Invalid username.” So I click on the “Lost your a password?” link, but my email address is not recognized. I have several email addresses, so I thought maybe I’d used a different one when I signed up, and I tried having a new password sent to me, but NONE of my email addresses are recognized… When I type in my username, I get a message “Check your e-mail for the confirmation link”, but an hour and several tries later I have received no email, either in my mail box or my spam filter.

Meanwhile, I tried following the instructions in the WP archives for dealing with password problems: removed plugins from the plugins folder (didn’t work); deleted and reinstalled my wp-login.php folder (didn’t work), and now my site is totally broken and only shows a list of links, rather than the beautiful pages I created. 🙁

Help!

Thanks so much!
Melissa