WPPA scripts no longer supported in v 6.6

I have this message on my dashboard. Need some help on how to fix it:

WPPA scripts will no longer be supported in version 6.6. Please convert the %%wppa%% scripts to [wppa][/wppa] shortcodes before upgrading to version 6.6.

WPPA scripts found in the following Pages / Posts

40 Gallery at loc:4 :%%wppa%%</tt>…
63 History at loc:2094 :%%wppa%% <tt><tt>%%slide=3%%</tt></tt></tt><tt> </tt></div…