After download some Full Softwares but you "don't now" where is the k3y, s3rial information. 'Cause in that folder has a file .nfo, when you open it, these's no information for you cr@ck that software. Read this TIPS, you'll know how to display it.
Step1: Open WordPad (Start > Run > Type WORDPAD > Press OK)
Step2: Browse to folder contain the .nfo file and Open it with wordpad.
Wow !!! K3y, S3rial ... in this file !
Do the same with others filetypes, you may get some Funny, useful results !