You will be fine in Houston; it is a tight connection, but you have time. You should arrive and depart from the same terminal. As I suggested, check your arrival/departure gates on continental.com before you leave. You can map out your path once you arrive. You'll find a map of the terminal in the in-flight magazine.

On your return, you have a very tight connection in Newark. To make it worse, you're arriving in Terminal A and departing from Terminal C. Right now passengers take the train between the two terminals, clearing security once again in Terminal C. It should move quickly when you arrive.

There have been persistent rumors of a bus service between the two terminals. I have read that it could start as early as this summer. If the bus service exists, you won't have to clear security in Terminal C. You will be transported between the terminals remaining in the sterile all the time. This bus is a rumor; if it happens, you will read about it on FT first

As it stands, you to have a very tight connection in EWR and you will have to move briskly to get from Terminal A to C. If there is a bus, it will make things a little easier. It looks like you are on the last flight to Albany, so the pressure is on to make it!