Ajmer to Merta /Nagaur- Coming from Delhi/Jaipur

I need to go from Ajmer station to Merta Road Station ( 17th Oct 2012). I will be arriving by 09639/Haridwar-Ajmer Express @ 9:40AM. Need to take the Ranakpur express which arrives at Merta Road Station @11:45AM.

Please advise if
1. There are buses /Taxis available from Ajmer for this journey?
2. How much to pay the Taxi/private car?
3. Whats the distance and how much time does it take?

Do you think this is a possible option. I am arriving at Delhi from Dubai on 16th Oct and heading towards Nokha near Bikaner. The above mentioned train reaches Delhi at 1:40AM on 17th Oct.

Thanks in anticipation.

You can go direct Nokha from Delhi by over night Train Number 12463, RAJASTHAN SAMPARK KRANTI(Three times in week)