There's a tweak listed on the site for getting XP Pro security settings on XP Home. It's good, but I've found an easier way to set sharing permissions on folders. You can use the GUI instaed of the more complicated command line without having to go into safe mode.

1. Click on the start button
2. Then run
3. Type shrpubw
4. Chose the folder whose permissions you want to change and give the share a name
5. Click next, now you can chose custom if you want to have full options.

Quick Tip: In order to set file permission in windows XP Home, the file system must already be converted to NTFS.  For more information on how to convert your file system, click here.