I deleted my Iphoto library and I want it back!

Yesterday, my computer sent me an advice telling that I should delete some itens from my Boot Disk, because it was almost full. So, I decided to clear my Trash, but (I don't know why and how) my iPhoto Library was inside it and it was gone forever with all my photos.

Well, I was calm because I thought I had it saved in my external HD, because of Time Machine (I have a MacBook Pro OS X Snow Leopard 10.6). So, when I went there, I've found all my other files, except my photos. The lastest Backup with my iPhoto complete was from August 2010.

I have tried to make Backups directly from the iPhoto and it didn't work out. Then, I tried to use the program "Find any file" and looked up for my iPhoto Library (Library6.iPhoto) and the only result was my empty iPhoto again. So I tried to make a backup of that old iTunes (August 2010) from my external HD, but, when I saw, it was also deleted because of a new actualization of my HD that occurred meanwhile.

What shoulsd I do to recover my iPhoto library from my External HD?

Is there any other way to recover also all my recent photos?

Please, help me! I am completely desperate!

Thanks,

Toni.