Your XP issit the Dell OEM version or the RM5 version?

Go to device manager and check is there any !, ?, X on any devices.

Probably you did not install the complete drivers (SM Bus Controller) or the correct sequences

To work effectively, you need to install in this sequence Dell Notebook System Software > Intel Chipset > Audio, graphics etc.

But you mentioned you got BSOD when you inserted the memory stick, what is the tech info?

Anybody with experience installing a lanun OS into Dell system can help this guy?

I personally don't encourage you to install a pirated OS or major apps (like Office suite or internet security) because Dell Tech Support might refused to repair your machine. I hope you could get a Dell OEM operating system CD at least cuz when you install other Dell proprietary software (especially Dell Support Center 2.0), your machine will communicate your service tag, OS and other details with Dell mainframes. Worst case scenario it might avoid your warranty due system failures resulting from installation of pirated app.

If warranty is not your concern, then you might try other route. Aside from getting drivers from Dell website, you could also do a Windows Update; if you already know how to bypass WGA validation.

Senang saja .. you said your friend got 1520 with XP right? Then borrow his OS CD and install la .. Dell OEM OS cd's does not require any product key  and you are allowed to install on any systems as long as its a dell.

Dell Tech Support wont know if your OS is ori or RM5 version, but if they check its not Dell OEM version, they can refuse support and ask you to call M$. You wouldn't dare to call M$ if you know your using the RM5 version right?