Install SH III

[johnlax]

Guys can you help? I have a good friend coming over this weekend I have had SH III before but computer crash 3 years ago set me back. My freind is great when it comes to computers and he offered to get SH III back and runing for me. Question I do not want to easte alot of time over installing and am willing to pay the 9 or 10 bucks for a new download. Can someone suggest the best way for me to do the following:

Install SH III up to current patch (assume ver 1.4)
Get and install SH commander (latest edition and if possible)
Also if possible put an mod on that will give me re-supply at sea

I have scouted Direct2drive site and can not find SH III on their list. I can use unbisoft site if I have to Can someone just walk me through this Does Direct2 drive have SH III I was told they did. My friend is real good and we can cope with the computer side of things but I need a bit of a road map so I do not waste his time please post back