We are using CJ xml feeds for our site products but having many problems.

No one is able to help me ...

Problem is the individual feeds are too big and all mixed.

Eg. say efaucets xml feeds we want only the bathroom faucets .
How do I do this since its xml copying the data into new xml is not possible since so many tags. (csv we can ) but need to use xml..

How do I do this that is fins all bathroom related entries and copy to new xml then can use all feeds and output whatever data I need into new xml's and use those.

To open in excel is very tough as eg. efaucet feed is 360mb..