Storing mouse co-ordinates in session and adding to xml string (C# .NET MVC)

[HappyHour]

basically my aim is to use JQuery to post back an x & y mouse co-ordinate to my controller where the 2 values are added to an array/list which is then added to the session.I want to iterate through a series of 60 clicks (and subsequently postbacks to the controller) before building an XML string with each co-ordinate in it.Something along the lines of this:\[code\]<xml><click1> <xpos>45</xpos> <ypos>55</ypos></click1><click2> <xpos>45</xpos> <ypos>55</ypos></click2></xml>\[/code\]I'm unsure as to how best to store the individual mouse clicks after each postback, and I thought perhaps a session and a multi-dimensional array/list would be good for this? I'm also a little confused as to how to convert the session back into a list and assemble the XML as required.Could anyone point me in the right direction?Many thanks!Sykth.