1) If they ask for any type of fees, RUN FAR AWAY!
2) You will most likely not find a plain ol’ data entry job.
3) Work at home jobs are not any easier than regular jobs you do outside the home, anything promising lots of money for doing nothing is a scam or a bad business opportunity.
4) Do not "process payments" for anyone, you could end up in the big house.
5) Is the job they are offering going to "change your life", I doubt it.
6) Legitimate companies will not advertise their jobs on banners or spam mail.

For a good free comprehensive list of legitimate companies that hire at home workers go to http://www.workathomedesk.com then click on Work At Home Directory. They also have updated job postings. Depending on your experience and skills you should be able to find something there. Good luck!
References :

I’ve put together a list of EVERY real money making website that I am a member of. I also list my current earnings each month and give you a link to their sites. I give you my word that every single one of these websites are legitimate.

I have made an extra $50-90 or more each month by using every website on that list. Obviously you’re not going to get rich, but it sure does help out with extra spending money.

If you’re interested, here’s the website that holds the list: http://empress-emily.livejournal.com/

I usually have a lot of time on my hands after my son goes to bed, so I’ve spent a lot of it researching websites that claims to pay its users for doing surveys, reading e-mails, writing articles, referring friends, and things of the sort. I have ran into a lot of scams along the way, so that’s why I’ve put together this list of all the REAL ones.
References :

I recommend you to check the site below:

Make Money Online
Money Is Waiting For You
Decide Now Or Lose Your Chance !
http://2008internetbusiness.we.bs/makemoney/
References :