reseting hands?

You can either filter them out or purge them at the database editor.

EDIT: Didn't read the PT bit, this works for HEM2.

yea ive try purge but stats / hands all still there so graph still same.....

or can i not change that ....ie .....the graph showing all my progress thus far?

We would highly advise against purging hands to "reset" your stats. This is your history, you cannot escape the past - you should instead embrace your past as you move into the future. Therefore rather than purging your stats we advise creating a new database - and saving your old database for posterity. Click Database > Database Maintenance > New Database. When you are done make sure to set this new Database to be the Default and to make it Active. Click Refresh on the report and you will be starting with a clean slate.