Query - vat

Dear Sirs,

I wanted few clarification from you experts, Am in Karnataka doing textile business, i have reg VAT, sometimes i get textiles and readymade from Tamilnadu where they charge CST, I sell in Karnataka, I charge VAT on readymade garments.

My Question is:
While filing VAT return can i take credit of CST? Are textiles other than readymades exempt from tax? Also want to know what is C Form

Please Clarify.

Thanks
Mahesh