Entering a Cyclone1 With a 100MHz ADC

Hi everyone,;
 I am currently writting  VHDL program to process datas acquired at 
100Mhz.
But first of all i am afraid of something:
   the fact that my fpga is old (cyclone 1) and that i work with a high 
speed adc scares me, since my adc card transfers data to my FPGA  in a 
parallel communication (at one clock). So i think that it is possible 
that my Fpga does't see corectly all the bits transferred from the ADC.
   I need to know if there is a care which should be taken while writing 
the VHDL code regarding this (for exemple is it necessary to do a Clock 
cross domain , or a buffer or something like that).
  If there is a thing that you don't get well,please feel free to ask 
me.

Thank you .