How to I access the C:\Recycler directory and delete some files in it?

Use the "Recycle Bin" icon on your desktop. Highlight the file in question and click File, Delete.

How to I access the C:\Recycler directory and delete some files in it?
spamfighter613's answer is the easiest. If you have 'show hidden and system files and folders' checked in Windows, you can open windows explorer and hit the recycle bin folder.