Convert drawing to data file

[l]

I have a construction drawing that I would like to scan into a CAD package
and amend. Can anyone suggest the freeware I would need to do this.
R

 

[MAMEngineer]

I have a construction drawing that I would like to scan into a CAD

package and amend. Can anyone suggest the freeware I would need to
do this.

http://homepage.ntlworld.com/heatons/softsoft/wintopo/