Was Windows installed first? It should have been as a primary partion of whatever size you need. 2 gig would be the minimum I would use. With the remainder of the drive as free space, Linux installs will set up swap file, etc. as needed. If you used QParted or some other means of resizing partitions you would need to let us know.
I hope you had everything backed up first.
Yes, I do speak linux.
I googled and did find references for SAM linux.
http://www.sam-linux.org/They have a disclaimer in bold that says:
As usual: THIS IS A TEST RELEASE, DONT USE IT FOR SERIOUS WORK!You may want to look at Vector Linux, or SLAX, if you want something a little more mainstream.