Help making monitor display in widescreen resolution


I bought an Asus VH236H a few months ago and until today only ever used it with my PS3. Today I tried to to hook it up but I only get options to change to the same resolution as my old monitor. What do I do to get my monitor to diplay in widescreen?

I just hope my computer isn’t to old to do it :(.

edit: I just noticed that I forgot I use Windows XP.

Also I just tried tried to use my Linux Mint Partition and I can get to 1080p, so I guess my computer can actually support it.