for a start i would suggest getting a seperate host to keep your files on, as they tend to be big in size, and demand a farly large amount of bandwidth.
ive never set up an auto patcher. but at a guess, (looking at the client side of things) you would then upload your main folders onto the root directory of your host.
edit your 'KaoriPatchGZ.ini' file to resemble the following,
KaoriPatchBanner=http://www.legendofdomain.webs.com/images/banner.jpg
KaoriPatchListFile=http://www.yourdomain.com/!klist.gz
KaoriPatchServer=http://www.yourdomain.com/
KaoriPatchDir=./Data/
KaoriPatchDir=./Graphics/
KaoriPatchDir=./Graphics/Items/
KaoriPatchDir=./Graphics/Monster/
KaoriPatchDir=./Graphics/Weapon/
KaoriPatchDir=./Graphics/Human/
KaoriPatchDir=./Graphics/Npc/
KaoriPatchDir=./Map/
KaoriPatchDir=./Wav/
KaoriPatchGameExePath=./Mir2.exe
*note that 'yourdomain.com' would be the domain name linked to your server hosting the files and not your website.*
zip the .ini file and the kaoripatch.exe file up using winrar or winzip (or what ever you may use)
upload it to your website (
http://www.legendofdomain.webs.com/files/) or where ever you want to store the zip file. then simply create a link on your website directing to that file. ie. <a href="../files/patcher.rar" title="Click to download autopatcher">Patch</a>
all that is a complete guess mind you

but worth a try lol