Has anyone been successful in downloading and installing their application on XP?
You maybe don't need to, depending on your requirements.
I haven't finished playing about with it enough to be sure just yet, but the application appears to be
integrated with the shell for Windows Explorer and also acts as a sync tool for SkyDrive - i.e., I think
it creates a local sync copy of what is on Sky Drive.
I already had my directory listing of SkyDrive in my Windows Explorer from a while back - I had mapped it as a network drive. You can drag and drop to it, etc.
I'm not so sure I want a redundant/duplicate local sync copy of SkyDrive on my local drive, so I may disable it if it does what I think it does.
I already have a Sync tool for Google docs, and I disabled that for the same reason - redundant/duplicate local sync copy. I still keep it as a mapped network drive though.