SendKeys not executing

Team,

I am writing VBS to perform a number of SendKeys. All of the sendkeys commands work with the exception of:

set a = createobject("wscript.shell")
a.run "http://192.168.69.154/stalist.cgi"
wscript.sleep (8000)
a.SendKeys "{Enter}"
wscript.sleep (8000)
  a.SendKeys "^{a}"
  a.SendKeys "^(c)"

The problem lies in ^a and ^c. These do not seem to work correctly. There are a number of other sendkeys commands in this script, I am simply providing the troubled code.

Any thoughts would be appreciated.