I know there shouldn't be any prob if u still have the provided vista activation/serial no on ur dell laptop, coz ur just installing vista using the vista dvd supplied by dell and not trying to do a system recovery for a dell lappy..
My vista home premium is actually the original vista i got from buying a laptop from dell, i find it to run a bit sluggish on my laptop soo i just install xp on my lappy while the vista home premium i've installed it on my DIY custom rig..
I've installed and uninstalled it 2 times already n the 1st time it just easy activation thru the net and when i formatted and reinstall vista on my DIY rig for the 2nd time all i have to do is call up microsoft to get the activation key..
There's no difference in installation compared with a retail version just that when u open up system properties after installation there is a dell logo there

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Added on September 30, 2008, 12:01 pmYup u need to install all of the HP drivers later on..

And yess u can still update it, i already install bunch of upgrade since installation.. I was able to even upgrade to service pack 1..
No worries there mate..

This post has been edited by cloudwan: Sep 30 2008, 12:01 PM