said by Octavean:Check the documentation on your Samsung LN26N360 HDTV. Its not uncommon to limit the resolution on some inputs. So this might explain your resolution upper limit issue (assuming it isnt a driver related problem). If a refresh rate is being forced then a specific resolution my not be given as an option for said forced resolution but I still think checking the documentation is a good idea.
1280x720 or 1366x768, you probably wont see much of a difference between the two anyway.
Naturally 1080p is more impressive so if you have the option you might want to rethink your HDTV choice. From Newegg, you can buy a HANNspree 32" 16:9 6ms 1080p for about ~$345 or a
TOSHIBA 32" 16:9 8ms 1080p for about $415 assuming you want to stayu with the HDTV option.
the most important thing here is running at native res. For LCDs, anything other than native looks terrible.