Hm. Well actually I just switched discs and put in a different blank disc. Now it's stuck on Device Not Ready (Logical Unit is in process of becoming ready) and it's been like this for a few minutes already. Also I checked with a burned DVD my friend gave me and it works just fine.
Oh and yes indeed I did restart.
EDIT: Well after another try of reloading the disc, it seems as though it's working now. Hopefully it'll actually burn correctly. Thanks for the help.
EDIT again: Well scratch that I got the same error as last time.
I 15:23:24 ImgBurn Version 2.4.4.0 started!
I 15:23:24 Microsoft Windows Vista Home Basic x64 Edition (6.0, Build 6001 : Service Pack 1)
I 15:23:24 Total Physical Memory: 2,095,560 KB - Available: 295,288 KB
I 15:23:24 Initialising SPTI...
I 15:23:24 Searching for SCSI / ATAPI devices...
I 15:23:24 Found 1 DVD-ROM and 1 DVD