No,not afraid of registry,it should be afraid of me,i meddle in there all the time.
I didn`t find any of those keys mentioned at that link,doesn`t have year,but has date of feb 13th (assuming this year) so will have to apply to an older version of messenger,on right track,old information.
But is what i`m looking for,the keys that force messenger to run when at a .net site