I was wondering , what type of cement and what mixture do I use for putting it up??   Can you please reply by,5/26/00?

Thank you for your time .

I am assuming that the wall is solid stone with cement mortar between them - not concrete wall with stone facing.

The best choice for you would be to try the nearest Building Materials supplier, such as Home Depot.  They have sacks of pre-blended mortars for every purpose, and these come with mixing instructions as well.

If you want to do it yourself, you can buy any type of cement - the cheapest will do fine.  Most likely it will be type II.
Buy a supply of mortar sand - they will know what size.
Mix the cement and sand between 2 to 3 parts sand to 1 part cement.  The more cement you use will make it easier to work and stronger - and more expensive.  The important part is to minimize the water.  Use as little water as possible.  Add the water slowly and mix well before adding more.  Start with a pound of water for every 2 pounds cement (1:2) mix, and keep trying until you find your best fit. 

Remember that more water means weaker concrete.

Again, my choice would be to buy the pre-blended sacks.  It may be a little more expensive to buy, but there is no waste and it is very consistent.

Good luck.