iphoto backup
I am backing up my iphoto library with Time Machine on a LaCie EHD. After backing up I follow this sequence to navigate to the library on the LaCie: LaCie > backupab > MacBookPro > Latest > MacHD > users > myself > Pictures > iphoto library. LaCie calculates the current size of the library but when I double click the library I get the message "the iphoto library is a time machine backup, and so cannot be used as the main library. Reopen iphoto with option key held down and choose another library." This message appears with a blue Quit button.
My questions are:
1) is the iphoto library being saved on the LaCie EHD. ?
2) if so, how do I access it?
3) if so, could I access my library using the LaCie on another computer?
Thanks
MacBook Pro, Mac OS X (10.6.6), iphoto 9.1.1