Basically what everyone else has said. I wouldn't think that laptop is much of an 'upgrade' really, but I guess if you're just browsing and watching movies then you'll be fine.

Both my laptops are satellites, so I can vouch that the make is pretty awesome (the cons are; horrible battery life, sometimes overheats) and my newer one has awesome in-built speakers. But they're also both (even the ooold one) dual cores.