Posted: 17/03/2015 at 10:27
Lyn, what direction does your house face? As chicky says a rambler isn't a good idea, climber is better. Roses in pots are relatively easy to look after, you have a different regime looking after them. Watering and feeding are essential. John Innes No.3 compost as the potting mix and a large enough container to accommodate the root system. Every year the top 2 inches of compost should be replaced as well.
If your'e going to train it against a wall, use wires instead of trellis, it's easier to train them and tie in new flowering shoots with them.
If your wall is anything other than east or north facing, you have a wide choice of rose, but options will be limited if you face north or east.
One last consideration is height of the rose.
If you want disease resistance, go for an English rose, from David Austin. If you look after them they will reward you with a constant display.