In this post is already explained what Auto Support is and what it does. Well if you didn’t know how to collect the data needed to upload to Auto Support look no further. Here’s described what you need to do to get the correct data for uploading to Auto Support.
Did I mention that Auto support is THE greatest online support tool ever made? NO, well you need to read this post again :).
XenApp / Xen Desktop: http://support.citrix.com/article/CTX130147
For XenApp & XenDesktop, you can upload the data to Auto Support directly from the Scout tool. For XenServer & Netscaler, simply save the Support Data bundle you generate, and then you can upload it via the Auto Support website.
As for most Citrix downloads and tools you need a My Citrix ID. If you do not have one, you can set one up for free at http://www.citrix.com/English/myCitrix/loginNewUser.asp