error with windows xp service pack 2

[jamisonm17]

i am running windows xp sp2 and when i try to install any newer software (such as windows live programs, java etc. ) i get an error message saying that i am not running a supported operating system, what is causing this, and how, if possible, could i fix it?

[patio]

List what programs you are having trouble with and we'll have a looksee...

[jamisonm17]

windows live messenger (says "cannot install on any version of windows older than xp sp2)

java (installed but had an error message saying i was not running a supported OS)

windows live internet explorer (same message as messenger)

those r the problems ive had so far, most likely more to come in the future.......

[Carbon Dudeoxide]

Is this a legitimate copy of Windows XP?

[patio]

And are you positive you have SP2 installed ? ?