How to lock a hand to a chair while the character is moving

[NNois]

Hello, here is i guess a simple question, i'm sorry for that but I've had the knowledge to do that while i worked with "messiah" when i was on lightwave (a long time ago ;-)). Unfortunately I haven't the need until now to do this stuff, so could somebody can guide me a little on how to achive that on a biped guided rig in softimage ? I simply want to lock a hand on a chair while the caracter is doing some stuff.
Thanks !

[Leo]

Place a null at the desired position and then constrain your the mainbone of your hand to that position.
Of course this can cause somewhat of a problem if the handbone is a child of the ankle or some other kind of armbone.
You might have to break up your parentingstructure to do this.

[NNois]

Thanks leo,
Finally, the old school fashion ! I've secretely hopped that there was a super cool powered technic with XSI ;-), but yes thanks a simple dynamic parenting and it works. Thanks

[Qwesto]

Or you could try this nice thingy: http://ethivierge.com/plug-ins/et_pickup/#more-190

[Hirazi Blue]

Seems like a "handy" tool (pardon the pun!)