To be clear though, "J2EE Web services" (i.e., JSR109/921) is not the only way of hosting a Web service within Websphere.
Chances are you won't find a Websphere product with Web services support that isn't built on J2EE1.3, since 1.3's been around for a while.
Different versions of Websphere will have differing levels of support for Web services. I know that version 5 and 6 have quite good support, but I've not looked any lower. It can't be too hard to find out...
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