The Iron Maiden's guitarist, Adrian Smith, has done an interview there are 5 years ago not only to promote the 'Brave New World' album, but also gave some guitar lesson. The videos are available here :

http://guitar.com/Misc/popplay.aspx?ParID=316

and

http://guitar.com/Misc/popplay.aspx?ParID=315

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those links you gave didn`t work... something about cookies  don`t really know what`s that

but... if you mean this guitar lessons http://youtube.com/watch?v=9wItsn3r_kc 

...I know it.. I tryed some of his advices (I`m kinda of a guitar player too... I kinda suck ) ... and the worming-up tips ..are GREAT!!! really helped 

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