Getting Currency Values Into Access DB Records?

I have a project to work with an existing Access 2007 DB table using Access Currency data type fields. I've tried many, many, many variations on what I'm doing, including using a command parameter or using this scheme and trying dOLEc in my command string (as shown below).

Dim dOLEc As Long = Decimal.ToOACurrency(dQ)

It all works fine (db connects, inserts record OK, closes connection) until I introduce any currency variable (WMoney is my example below). Then it returns Syntax Err 5 in INSERT INTO statement. Current VB string for the execute non-query command is:

Dim sdbcommandString As String
Dim dQ As Decimal = 8950.13
'control test--no currency field--works perfectly every time
sdbcommandString = "INSERT INTO Workers (WFullname,WRay)VALUES('George D. Jones','abcdefg');"

'but add the currency data type to it and it bombs

sdbcommandString = "INSERT INTO Workers (WFullname,WRay,WMoney)VALUES('George D. ZZZZZ','abcdefg'," & dQ & ");"

As I said, though perhaps not too clearly, I've also tried variations on this theme:

sdbcommandString = "INSERT INTO Workers (WFullname,WRay,WMoney)VALUES('George D. ZZZZZ','abcdefg'," & dOLEc & ");"

In all cases, I use the same code to connect to my db and use

OLEdbConnection1.ConnectionString = sDBConnString
OLEdbConnection1.Open()
OLEcommand = New OleDbCommand(sdbcommandString, OLEdbConnection1)
OLEcommand.ExecuteNonQuery()

And I've tried it using variations on this theme where :

sdbcommandString = "INSERT INTO Workers (WFullname,WRay,WMoney)VALUES('George D. ZZZZZ','abcdefg',?);"
OLEdbConnection1.ConnectionString = sDBConnString
OLEdbConnection1.Open()

[code]....

I need to use to make it work with a currency field?