How can I locate a component in my FeatureManager design tree if it is in a subassembly?
Method 1: Use the find utility. Right-mouse click at the top of the assembly FeatureManager design tree and select Go to... You can type in all or part of the component's name. Click Find Next until the component scrolls into view. Or, from the graphics window, you can right-mouse click on any face of any component and choose Go To Feature (in Tree).
Also, you might find it helpful to change the setting in Tools - Options - System Options - FeatureManager and turn on the option to Scroll selected item into view.
Method 2: Beginning with Solidworks 2008, there is a search-filter field (shown above) at the very top of the Feature Manager in assembly files, part files, and drawing files. Simply type your character string within this field, and as you type it will dynamically filter away all features except those that match the field.