Combining Feedburner Feeds

I've had two feeds going since I took on a domain name for this blog. One has 43 readers and the other has 27 readers. I want it to read that i have (tries again to do math) 70 readers so tonight I searched high and low for instructions on how to do just that. So, if you are one of my readers please let me know if things mess up for you. Supposedly it should work fine and update accordingly but of course right now it shows the 27 readers so it hasn't combined quite yet. If all else fails I'll resend out the sign up and please accept so I don't lose anyone. :)