my hard drive crashed, how do i get a report of all the returns I've previously efiled

[Just-Lisa-Now-]

Not sure you can unless you have a backup of your client files.  

If you restore the client files from your backup, then you can update your Efile acknowledgements and get all your Efile info back.

[taxes96786]

Lisa I take it you are saying that ProSeries does not maintain a record of authorized/transmitted/accepted returns on our individual site?

[Just-Lisa-Now-]

Intuit does not keep a record of "what" youve filed, no.