How to burn hi-def movie with .mpeg...

If this is a dumb Q then I apologise. With the trial version of Premiere Elements 7.0 I imported AVCHD 1920x1080i video, and created a hi-def (1920x1080i) mpeg file with a .mpeg file extension (not an .m2t extension). It plays perfectly in windows medial player (With the ''Created with Adobe Premiere Elements Trial version'' banner across it). So I purchased the software. But now I can't for the life of me work out how to create a 1920x1080i .mpeg file. Help! Thanks from New Zealand.
How to burn hi-def movie with .mpeg...
From the Share tab select the Share to Computer option and select MPEG. Then select a high definition option.
How to burn hi-def movie with .mpeg...
Capture the clip once more after delete the prefrences.

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