Xml Issue ?In C# console or windows forms

Question

Hi
This is very important assignment i tried tried getting struck dam dam ..
Experts just need to sort this issue plz .
Please check the attachment provided :) XML file attached
What is need is very simple :
In XML file there are  
-<ENTITIES>
+<ENTITIES ACTION>
   +<ATTRIBUTES>
     +<VALUES> 
.
.
.
.
 +<ENTITIES ACTION>
+<ATTRIBUTES>
+<VALUES> 
</ENTITIES>
The thing i need is looks simple but i am feeling a bit complex ..  
In the attachment file there is Entity Action Tag right Under that we have many tag key-value pairs .. In that what i need is  when i input to text boxes or a method in console like "LONGNAME" & "CATEGEORYNAME" .. I need to get all the details of those inc those values in some manner like CATEGEORYNAME: APPAREL ... All key value pair under the matched Entities ACTION ..
 Second Thing is When i dig even deeper like given  "LONGNAME" & "CATEGEORYNAME" & also "NAME" which is under attributes I JUST NEED to get the value ...
Hope i made clear so everyone can understand .
Cheers
Have a nice day