I have a probleme, "this beta has expired " ( version August-1-2007)

 From:  jojo (JONATHAN)
830.1 
Hello has all !
I have small a concern, I unset the clock of Windows and now MOI any more start does not want.
How to make? It notes me "this beta version has expired", I have uninstall and install, anything done there. I erased all the remaining files, as all what refers in the base of register.

If somebody has a solution, thank you in advance.

Win XP SP2 - P4 - 1 Go

Jonathan.

sorry for my english.