Hm... So you want to buy a labtop just so you can play backing tracks and play your guitar through it?? I guess if you have the spare cash go for it... yuo can do a lot through a computer... however, labtops aren't what you want for recording or high end software... they're not easily ugradable and they normally have less RAM and less hard drive space... since they're mostly designed for certain tasks that are more job oriented than music or other tasks that require greater space and more technology...

If you're just interested in getting the backing tracks to play over... youc can just burn them to a cd and play over them... If you're interested in effects... there are a lot more useful tools than an effects processor ran through your computer... and that might be the main concern... the sound card on any labtop won't support an effects program... so like I said... you can burn a cd... or a couple of cds of your backing tracks... and purchase a Digitech effects processor for 100-300 dollars depending on what you want... I would recommend a GNX3 or GNX4... it comes with a built in recorder... might give you more bang for your buck... when you're looking at 2000 USD for a labtop that probably won't even be able to support your effects program...