my ds is the late walker sherie refers to in our belly buddies group LOL!!! he has just started and i would say is now at 50/50 walking and crawling... i was kinda worried but not at the same time. i knew it was normal and expected him to be late (DH and i both were and he was a v late crawler) - he cruised around for ages etc etc etc. i go tmore worried when i hung around lots of other babies (esp younger ones who ran everywehere) and especially with all the comments and questions... and i agree with MBear picking him up all the time is the worst bit (do NOT attempt a petting zoo LOL).
That said he is incredible in other areas - talks, imagination etc etc etc - so i guess the lesson is that they all do diff things at diff rates - walking is just a milestone that is so easily comparable and obvious IYKWIM....
I know it doesnt help now but it will happen eventually...
that said i dont even think yours is late yet LOL!!!!