Do I need to Replace my Monitor?

[DeltaFart]

Ok, i got a 19in Widescreen Westinghouse LCD Monitor
For a while, even before my current PC which is a custom build, I've been having these wierd lines on them, like ripples on a lake, going horizontally. Light dark light dark light dark, just a ripple effect that vibrates up and down a bit. It's made worse in 3D programs especially during intense lighting scenes, liek a big fire fight, or in Stalker Call of Pripyat, an unusually intense thunderstorm. Does this mena I need a new monitor?

Its native and highest resolution si 1440 x 900
Frequency, 60 hz
Right now the Vertical Freq is 59.7
and the horizontal freq is 55.8

What can be causing this? It's a kind of old monitor, so is that possibly it? Its just not doing as well as it used to? Its going through a VGA - proprietary(beleive thats the word) port on my GTX 260 card

[FuzzySquirrel]

Have you tried a different cable?

[DeltaFart]

Don't have another one, unfortunately, changed out the adaptor I have for another one liek someone suggested, but that didnt help

[FuzzySquirrel]

It's probably the cable tbh. I have a 20" LCD TV i use sometimes and one of my cables makes it extremely blurry.

[DeltaFart]

Eh, guess I'll just get a new monitor then, cause I don't want to have a19 " monitor now haha
Though I think I need to get some more fans for the case first, one lost a blade, and another spot just odesnt have it since it's on side, but since I got a second GPU, It might be a good idea

[DeltaFart]

So, anyone got ideas for a monitor
ALl I know is
High Contrast
Smallish Pixel Pitch
DVI port, cause I don't want to use a VGA to DVI converter
Good colors
25 inch max, 20 min
widescreen
LCD or LED, whichever gets a better picture, but this isn't really important
Not over 500, preferably under 300, but I'll go a bit over that if needed
Got ideas?