New Dell Servers and UPS hookup, how to?!

I have 2 Dell blade servers that are about 1 year old. I want to get them hooked up to the APC UPS (700 rackmount model) but im not sure how the server will turn back on in the event of a power loss?

I have the powerchute software but not sure if I should use that or winodws based ups software.

I have no problems getting the server to shutdown, just not sure how to turn the power back one with out actually walking over to the server and pushing the power switch.