[mrtg] LINUX & Win2003 MEM/HDD graphing . . . howto

[AA Inter.Network Services / SYED JAHANZAiB]

I am using MRTG on Linux. How can I do the following . . . ?
 
I want mrtg graph for the the harddisk partitions of various remote linux &windows 2003 base pcs like C: drive or D: drive with 
Total Megabytes / Used Mbytes / Megabytes Available space graph. 
 
I also like to graph the Total Memory/ Used Memory / Free memory.
 
Please help me.
 
Regards,

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