First off...thanks to everyone who has been helping in advance...I am kinda new to kixstart and your help is well appreciated.

I am able to extract the Binary value from the string using the following code:

dim $x,$Binary

$x = readvalue("HKCU\Software\radmin\v2.0\clients","2")
? "Binary Value = $x"
$Binary=val("&"+substr("$x", 29,2))
? "Binary=$Binary"

But once I actually extract them how do I change them to what I want (from 100 to 10)and get them back into the string without changing the rest of the string. I basically just want to insert 0a in place of 64 in this string and then write it back into the registry using writevalue. Help!!