'Will it take long to burn the movies etc onto disc?'.......from 20 minutes to 40 minutes, depends on the lenght of the DVD, extras etc. and I assume the drive is a 2 or 4 times.
'What type of cd's will I have to buy to do so?' any will do though a quality name might be longer lasting. I use ones from makro at £17 for 100. I've used over 2000 so far with virtually no coasters.
'Can I use re-writable ones?'...they can be a pain in CD players. they are great for backing up data but for muzak use CDRs.
'I'll mainly be using the pc for browsing the web and playing the odd game.'... the PC has more than enough specs for what you need. You may get the odd gamer muttering but take no notice, if you are a real gaming anorak you would be using Nitrogen cooling ;-)))