Newby DTD problem

Hi all,

I'm relatively new to XML and have this XML document...

<?xml version="1.0" encoding="ISO8859-1" ?>
<!DOCTYPE swiftmessagefx SYSTEM "A:/Extxml/DTD/swiftmessagefx.dtd" >
<swiftmessagefx>
<fx20 adr="CS3434675217"></fx20>
<fx30 no="023104"></fx30>
<fx31P org="023101"></fx31P>
<fx32B pce="EUR19753.13"></fx32B>
<fx32M commls="EUR18375.00"></fx32M>
<fx33F pu="EUR12.25"></fx33F>
<fx35A typ="SA" unit="1500"></fx35A>
<fx35B ISIN="DL9665213487" stckrf="MUNICH AIRLINES"></fx35B>
<fx71F comm="EUR1378.13"></fx71F>
<fx82D trad="J.P. MORGAN INVESTMENT MGT"></fx82D>
<fx83D code="13401" fund="GLOMAR US GROWTH FUND"></fx83D>
<fx85D sett="/AFIN/01028"></fx85D>
CREDIT SUISSE
<fx87D brok="/AFIN/01028"></fx87D>
CREDIT SUISSE
</swiftmessagefx>

I am checking it's XML content and validity using the following "external DTD"


<?xml version="1.0"?>
<!ELEMENT swiftmessagefx (fx20, fx30, fx31P, fx32B, fx32M, fx33T, fx35A, fx35B, fx71F, fx82D, fx83D, fx85D, fx87D)>
<!ELEMENT fx20 (adr)>
<!ELEMENT fx30 (no)>
<!ELEMENT fx31P (org)>
<!ELEMENT fx32B (pce)>
<!ELEMENT fx32M (commls)>
<!ELEMENT fx33T (ppu)>
<!ELEMENT fx35A (typ, unit)>
<!ELEMENT fx35B (ISIN, stckrf)>
<!ELEMENT fx71F (comm)>
<!ELEMENT fx82D (trad)>
<!ELEMENT fx83D (code, fund)>
<!ELEMENT fx85D (sett)>
<!ELEMENT fx87D (brok)>

<!ATTLIST fx20 adr NMTOKEN #REQUIRED>
<!ATTLIST fx30 no NMTOKEN #REQUIRED>
<!ATTLIST fx31P org NMTOKEN #REQUIRED>
<!ATTLIST fx32B pce NMTOKEN #REQUIRED>
<!ATTLIST fx32M commls NMTOKEN #REQUIRED>
<!ATTLIST fx33T ppu NMTOKEN #REQUIRED>
<!ATTLIST fx35A typ NMTOKEN "(SS | SC | SA | CA)"
unit NMTOKEN #REQUIRED>
<!ATTLIST fx35B ISIN NMTOKEN #REQUIRED
stckrf NMTOKEN #REQUIRED>
<!ATTLIST fx71F comm NMTOKEN #REQUIRED>
<!ATTLIST fx82D trad NMTOKEN #REQUIRED>
<!ATTLIST fx83D code NMTOKEN #REQUIRED
fund NMTOKEN #REQUIRED>
<!ATTLIST fx85D sett NMTOKEN #REQUIRED>
<!ATTLIST fx87D brok NMTOKEN #REQUIRED>

And my browser is throwing back this error message

"Error in default attribute value defined in DTD/Schema. A name contained an invalid character. Line 3, Position 1

<swftmessagefx>"

And for the life of me I can't figure out what's wrong with my DTD.....swiftmessagefx is the root element with 13 children, which in turn have attributes associated with them.

I'd appreciate any help anybody can give

Shak