ADODB Recordset Not Loading From Parameter Query

Trying to load a recordset from a command object. Command executes without
problems. No errors, that I can detect, in the count but it continues to
return no rows.

The query itself runs fine when running manually and supplying the parameters.
Here's the query:
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PARAMETERS [@LastName] Text ( 255 ), [@FirstName] Text ( 255 ), [@City] Text
( 255 ), [@Firm] Text ( 255 );
SELECT tblContacts.ContactID, tblContacts.LastName, tblContacts.FirstName,
tblZip.City, tblFirms.FirmName AS Firm
FROM tblZip INNER JOIN (tblFirms INNER JOIN tblContacts ON
tblFirms.FirmID=tblContacts.FirmID) ON tblZip.Zip=tblContacts.Zip
WHERE (((tblContacts.LastName) Like [@LastName]) AND
((tblContacts.FirstName) Like [@FirstName]) AND ((tblZip.City) Like [@City])
AND ((tblFirms.FirmName) Like [@Firm]))
ORDER BY tblContacts.LastName;
------------------------------

Here's the code:
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Dim con As ADODB.Connection
Dim cmd As ADODB.Command
Dim prm As ADODB.Parameter
Dim rs As ADODB.Recordset

Dim iTotal As Integer
Dim iItems As Integer
Dim iSubItems As Integer
Dim lstItem As ListItem
Dim lstItemNew As ListItem

' Clear the ListView control.
lvContacts.ListItems.Clear

' Create db objects
Set con = CurrentProject.Connection

' Set up command
Set cmd = New ADODB.Command
cmd.CommandText = "qryContacts"
cmd.CommandType = adCmdStoredProc
cmd.NamedParameters = True
Set prm = cmd.CreateParameter("@LastName", adVarChar, adParamInput, 25)
cmd.Parameters.Append prm

Set prm = cmd.CreateParameter("@FirstName", adVarChar, adParamInput, 25)
cmd.Parameters.Append prm

Set prm = cmd.CreateParameter("@City", adVarChar, adParamInput, 25)
cmd.Parameters.Append prm

Set prm = cmd.CreateParameter("@Firm", adVarChar, adParamInput, 25)
cmd.Parameters.Append prm

' Add parameter values -- make sure not null
cmd.Parameters("@LastName").Value = IIf(Len(txtLastName) > 0,
txtLastName, "%")
cmd.Parameters("@FirstName").Value = IIf(Len(txtFirstName) > 0,
txtFirstName, "%")
cmd.Parameters("@City").Value = IIf(Len(txtCity) > 0, txtCity, "%")
cmd.Parameters("@Firm").Value = IIf(Len(txtFirm) > 0, txtFirm, "%")
Set cmd.ActiveConnection = con
Set rs = cmd.Execute
------------------------------
Have also tried creating the paramters differently. Changing wild card char
to "*". No matter what I try I get no rows.

Hoping there's a simple explanation. Thanks for any help or guidance.
.