Hi,

>Is it possible to use parameters in INSERT and UPDATE commands with the VFP OLEDB Provider in .net (or any environment really?)

VFPOLEDB doesn't support named parameters. Try:

System.Data.OleDb.OleDbCommand SaveGroupCommand = new OleDbCommand _
("UPDATE GROUPDETAILS SET GROUPNAME = ? WHERE GROUPDETAILS.GROUPID = " + this.GroupId.ToString(), dbConnection);

SaveGroupCommand.Parameters.Add("@x",DBType.String).Value="Did it save"

or even:

System.Data.OleDb.OleDbCommand SaveGroupCommand = new OleDbCommand(
				"UPDATE GROUPDETAILS SET GROUPNAME = ? WHERE GROUPDETAILS.GROUPID = ?, dbConnection);

SaveGroupCommand.Parameters.Add("@x",DBType.String).Value="Did it save"
SaveGroupCommand.Parameters.Add("@y,DBType.Int32).Value = this.GroupId '(assuming VFP Int)

Just make sure the order in which the parameter statements are added matches the order of the '?'s in the UPDATE command...
HTH,
Viv