I suggest you change your DHCP pool to be 192.168.1.10 - 192.168.1.100 on the router. The router shouldn't need to know about the server's IP unless it used in a firewall config somewhere. Then set your server up with a static IP, using whaever config tool you used to set it up with DHCP. You need to ensure that you get the netmask and default gateway correct.
Once you've done this, check that you can ping your default gateway (which should be your router).
If this doesn't work, please post:
- your router make and model
- your distro
- the output of the command (run as root)