Have a look at the ride I did this morning. Keep in mind that I have only been back in to cycling for about 5 weeks and that my name is Davehateshills.
Route 20 miles with 1,075ft of climbing
20/08/12 - 1hr 49min avg speed 10.7mph - stopped and walked up the steep bits
http://app.strava.com/rides/19148672
06/09/12 - 1hr 35min avg speed 12.6mph - no stopping on any hills
http://app.strava.com/rides/21030174
Now, I have changed my bike between rides and my new bike doesn't have a granny ring on so I was a bit nervous doing this route again but just try to get a rhythm going and stick with it, before you know it your at the top. Good luck and keep at it.