Sales Management Software. What to use for an affiliate?

Hi,

I'm trying to become more organized with my business as I've started to upscale and in doing so, trying to manage all the data is making my head spin.

I'm an affiliate across many different networks and here is what I would like the software to help me with.

I want to be able to input how many sales I made from an individual site on a specific day (mon. tue. etc) as well as what month and year.

Basically I want to know what days of the week I make the most sales while also monitoring the best time of the month and to track the individual sites.

I'm sure this can be done in excel but I'm just not very good at excel.

I don't need a program with a million features, but if you can recommend some products to look into that would be great!

Thanks!

Bump:

Maybe a better question is simply, what do you use to manage everything?

There is one recently...affiliate organizer. It's a software shared by a member here....
http://www.blackhatworld.com/blackhat-seo/member-downloads/364916-get-affiliate-organizer-2-0-a.html