I'm not sure if this is the best solution but it should work.
<cfset strIn = "k2i5dows38293fd7u0c2wdslk65jsf9">
<cfset strOut = "">
<cfloop index="i" from="1" to="#len(strIn)#">
<cfset char = mid(StrIn,i,1)>
<cfset strOut = strOut & iif(IsNumeric(char),DE(char),DE(""))>
</cfloop>
<cfoutput>#strOut#</cfoutput>
Lee Moore
Senior Project Manager
WarpDrive Networks
201 825-4600 x 320
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