Probably low impact (Score 2, Informative)

If I remember correctly, electronics use (including computers) has low environmental impact compared to things like driving an SUV or living in a big house. This is from the book:

"The Consumer's Guide to Effective Environmental Choices: Practical Advice from the Union of Concerned Scientists"

You can get it here:

http://www.ucsusa.org/publication.cfm?publicatio nI D=308

and read some reviews here:

http://www.amazon.com/exec/obidos/tg/detail/-/06 09 80281X/104-4760810-4413531?vi=glance