Lag on my DAW

[churned]

When I am using a DAW (Digital Audio Workstation), Sonar, Sony ACID, Cubase e.t.c it's laggy, the sound is choppy at times and there is a delay in playing an instrument whilst recording then hearing it from the speakers, what do I need to sort this out, new soundcard, new processor?

Currently using the onboard sound from my Dell motherboard. rolleyes

Specz:

Pentium 4 3.0Ghz
2GB DDR2 RAM
Onboard sound

And if I do need a new soundcard, anyone got any recommendations?

 

[churned]

bump

 

[churned]

Thanks, I was recommended to get a MIDI controller from the same company, but looks like they have everything I need to get started on their site