The best thing would be for FoxitReader to do what UR does: support a URL protocol (a URL format for command-line launching, ala ur://C:/Documents%20and%20Settings/user/My%20Documents/My%20Stuff.urd?item=1000). Should be straightforward :^).
Alternatively, create a Windows shortcut with the target + command-line parameters, and hyperlink to the shortcut file in UR.
http://vlaurie.com/computers2/Articles/shortcuts1.htm
http://www.google.com/search?q=how+t...ndows+shortcut