Or get a T15 torx, take your laptop to the local home depot, the guys will probably help you unscrew it - again, WATCH the static charge and all that...or buy it. lol
If not, the Dremmel tool is an option, just slice the head out and you're good to go.
Why not just use a boot disk repair cd like Hiren's Boot CD?
You boot up using the CD, and can load a mini Windows OS complete with network support.
You could also repair the boot sector using the tools on such a disk.