Proto-Indo-European questions

Just a few questions on PIE morphology. I thought I'd put them to the
collective wisdom of the list, since the WWW offers me no answers, and I
can't find them in any of my books.

What were the PIE "secondary" verbal endings? And what were the dual verbal
inflections. I know what they were used for, but what did they look like?
The Sanskrit endings -vah, -thah and -tah in the present points to IE forms
*-wos *-dhos (?) *-tos, are these correct and what were the forms in the
other "tenses". While we're at it, what were the dual pronouns? Please,
please, please help me! Aredos' future depends on this!

Thanks in advance,

Dan

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Lo deu nu preca êl'aisún necoui.  God prays at noone's altar.

Dan Jones: www.geocities.com/yl_ruil/
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