Integrating Flex into portals has always been an interesting topic for enterprise developers. Other than [a blog][1] I did a while back there hasn't been much information out there about how to get Flex apps into portals. But I just read a great article on IBM developerWorks about [Integrating Adobe Flex with IBM WebSphere Portal][2]. It's a great read for enterprise developers looking to combine Flex and WebSphere Portal.

 [1]: http://www.jamesward.com/2006/11/02/flex-your-oracle-portal/
 [2]: http://www.ibm.com/developerworks/websphere/library/techarticles/0911_el-hadik/0911_el-hadik.html?S_TACT=105AGX10&S_CMP=LP