Distributed Transaction

I want to do distributed queries in a transaction, I'm using win XP pro, then I connect to a remote server (win 2003 standard), the remote server has sql server standard edition and my computer has sql server personal edition.
when I try to do this
begin tran
select * from rafael.tcadbcoi.dbo.invlin
commit tran
I get this error
The operation could not be performed because the OLE DB provider 'SQLOLEDB' was unable to begin a distributed transaction.
[OLE/DB provider returned message: New transaction cannot enlist in the specified transaction coordinator. ]
OLE DB error trace [OLE/DB Provider 'SQLOLEDB' ITransactionJoin::JoinTransaction returned 0x8004d00a].
without "begin tran" , the sicript works ritght> when I try to do this
> begin tran
> select * from rafael.tcadbcoi.dbo.invlin
> commit tran
> I get this error
> The operation could not be performed because the OLE DB provider
'SQLOLEDB' was unable to
> begin a distributed transaction. [OLE/DB provider returned message: New
transaction cannot enlist in
> the specified transaction coordinator. ]
> OLE DB error trace [OLE/DB Provider 'SQLOLEDB'
ITransactionJoin::JoinTransaction
> returned 0x8004d00a].
> without "begin tran" , the script works right
--
Error 0x8004d00a is an issue with MSDTC. On the Windows 2003 server, verify
whether "Enable DTC for remote access" is turned on, reboot and try again.
For more information, consult the "Configuring an application server"
documentation of Windows 2003 online help.
Hope this helps,
--
Eric Cárdenas
SQL Server support