Don't want destroy windows! Ask skills

I am going to install Linux/Debian on my computer.
My current OS is windows 98.
My question is that if I install Linux, it is required to partition the hard drive.
Windows may be destroyed. I still want to keep it. I have no windows installtion CD. I don't want to buy it.

Can I avoid damaging windows while setting up Linux?

Thanks!

Yes you can

  1. Defrag your drive and use a partitionning tool like partion magic to get space for linux partition
  2. Use VMware if your config can afford to do so ...