It could be that the DVD burner can't burn to DVD-R discs.It would depend on how old it is mostly.Use this tool and you'll know for sure if it can use them or not.If it says it can then you have other problems.The first things I would try is running a cleaner disc in the burner and seeing if...
As long as you know your username and password,you don't really need the CD.Go to control panel,network connections,in the left column it will say create a new connection,click there and it will guide you through it.
Yep,that's it,you just divide by 8.Your speed is in megabits,download speed is in megabytes.If you're getting 170 you're almost at 1.5 speed anyhow,if it's much more to upgrade,I wouldn't bother.Top speed at 1.5 is 192 so you're not gonna gain much for your money.
That would depend on the laptop,any stereo will play it with the right connectors.If your laptop has the connections to hook up speakers to it,all you would need is 3.5mm stereo to RCA adapters to plug into the stereo.