There are two alternatives:
One position is called Jnana Mudra. Keep your right hand on the right knee and left hand on the left knee, keeping the palms turned up. Let the tip of the index finger touch the tip of the thumb with a slight pressure between them. Keep the other fingers straight. Thumb must be outside few millimeters, can't be in equal outside position with index finger. Index finger inside touch thumb - index finger present individual conciousness, and thumb present universal or higher conciousness which is always (and in meditation through hand position must be) higher. Of course soul (as individual conciousness) is smaller then One Conciousness or God. Logical explanation and is: two nadis on the centre index finger and on the centre thumb must be in direct touch when want properly use this mudra.
The alternative position is called Brahma Mudra. Keep both the hands on your lap one above the other by keeping the palms upturned. Let the left palm remain under the right one.
One good video link is http://www.youtube.com/watch?v=EQ7PAUlRNSM - look 1:18 - 1:33 of Brahma Mudra variations.
Keep your eyes softly closed (without thinking, memory, visualization).
Concentration (way though conciousness) through middle eyebrows (depend of type meditation can be and on the neck, or heart, or ..) on the bindu (inner light forms) and nada (inner sounds forms on the right side). Each bindu have deeper subtle higher level and each nada (shabda) have deeper finer higher level, and this is only one and real way highest meditations.
Have higher chakras up sahasrara (sahasrara is main in causal/material part of world), and this is way for develop and realized all this levels.
Bhakti as pure conciousness with Guru love through Grace is absolute dominant point in this higher practices real yoga (which start up sahasrara chakra).
Om Namah Shivaya