I was doing some digging on the github to see if I could fix the problem in the normal send transaction window.
I was happy to discover that MyEtherWallet 2.0 is being worked on right now and has the ability to easily modify the gas limit on the regular send transaction page!
This will definitely make it easier for new people to get started.
You can download the in-progress 2.0 version of the new MyEtherWallet with the fixes from github:
https://github.com/kvhnuke/etherwallet/archive/mercury.zipHere are the specific changes made related to sending transactions in case you are curious:
https://github.com/kvhnuke/etherwallet/commit/e67d85493cd29f065c6546c16fb51fb82f937282These changes were literally made hours ago.
I tested this out and it works perfectly! Nice work MyEtherWallet devs!