The ram is a bit on the low side but I wouldn't imagine the CPU at 100%.

When you open the task manager to find that info, do you see many other applications running? Often times it will list what is running and how much CPU it takes up.

Does it dedicate 100% towards Scratch Live?

yea i have that open and it say scratch live 98 per cent then dips to 37 then back up it keeps going up and down

Does it make a difference if you are playing a song or not?

Does loading tracks, scrolling the library ect cause a spike?

Or is it just sitting idle and getting the spikes?

when its idle its ok and when scrolling the tracks its fine its when i play a track it gose to 100 percent

I would look into adding more RAM. A 1 GB stick is fairly cheap these days and relatively easy to put it. There are many how to tutorials on the net.

A few things in Scratch Live to tweak would be
Turn off Auto-fill overviews / Auto gain / Hi Fi Resampler
Raise the USB audio buffer to 15, move the maximum screen updates to 40.

I don't think it will be significant enough, but it could help some.

yea the lap top has as much ram as it can take so ive been looking at laptop i know serato dont run well with vista but will it run well with windows 7 and the sepcs of the laptop i will be getting is 3 mb ram 3ghz cpu windows 7 will that do the trick just asking befor i buy it

The new computer sound like it will work just fine. The current computer maxed out at 1 Gb is the problem, it has no where to grow. When purchasing the new computer, make sure to stay away from AMD processors.

yep new pc runs like a dream