You can work part-time and still be eligible for Social Security Disability.
If your condition limits the amount you can work, Social Security takes this into account.
The limit you can earn per month is $900 for 2007. The amount allowed changes every year.
If you earn more than $900 per month, then Social Security treats this as substantial gainful activity and you will be found not disabled.
There are certain exceptions to this rule but they are limited. If you have any questions please feel free to call me.