If you are looking for very basic geographical information about Kilimanjaro, Wikipedia has a good set of information about the mountain, its history and the volcanoes. Read Wikipedia on Kilimanjaro.
I especially enjoyed the Nasa picture from the ground level of the mountain. Although not in preportion, you get a great view of the other extinct volcanoes as well as Kilimanjaro’s little sister, Mt. Meru.

The best Kilimanjaro 3D views and route info are on this non-commercial site:
http://www.go-safari.com/Kilimanjaro/kilimanjaro.htm
They use Google Earth!
Tourists Skip Kenya, Head to Tanzania
Climb Kilimanjaro for The Children's Society
Mt. Kilimanjaro Forum Thread for the week of October 16, 2006
World Leaders Climb Kilimanjaro
paul on Historic Kilimanjaro
hello,i am planning in Hiking Kili in September,going alone,hoping to connect with other hikers to d...
ceccaldi on A few Common Kili Scams
hi, we gonna climb the kili in august with 3p.Machama mweka route who can give us info about a guid...
Robert Modu on A few Common Kili Scams
Me and My Wife, wants to climb Mt Kilimanjaro on August 2010, we would like to have a group of peopl...
Rich on A few Common Kili Scams
Is anyone familiar with Mount Kilimanjaro Climbing? A reasonable price, they have the itinerary I'm...
Kilimanjaro national park on A journey along the Northern Circuit of Kilimanjaro...
A visit to the highest mountain of Africa and exploring the flora and fauna of this region should be...