Dual Booting redhat in HP Elitebook 8470w

I was trying to dual boot red hat OS in my current HP Elitebook 8470w .

For this i created a new partition both with NTFS and FAT32 file system.

However my red hat OS could not detect the free space ??

Do i need to delete the HP tool and HP recovery partition so that red hat OS can detect my free space ?

Is there any way i could install red hat in my windows 7 system ??

Any feedback would be appreciated

Regards,
Sandesh