Character build help requested Options

[Animus]

I'm wanting to play a different kind of character than I'm used to, and I'd appreciate some input on it to help me build it with out missing some key portion that will render me ineffectual. I've played a mage, and a shooter; now I was hoping to play a "thief". I figure that a character like this would likely end up as an Elf, so I was thinking of some B@E skills, stealth, gymnastics, some face skills, perhaps a smattering of computer skills.

I'm really not absolutely sure how a character like this works, so I'm not sure what all is needed, or where to start. Thanks in advance for any help you can give me.