AMD1083

I am very confused who or how to ask for LOR. I graduated my undergrad in 2006 with a BA in Math, and am applying to MS programs related to CS or IT. I don't think any of my professors from 7 years ago will remember me well enough to write a relevant or helpful letter. I also don't have any relevant experience in the field I'm hoping to go into. I am planning to ask a couple previous supervisors, even though the work has nothing to do with that field. Do you think this is a good idea? I don't know who else to ask. Do you think any professors who might remember me could even write a decent letter years later? Please help!