Actually it could be a BIG problem PC3200 Corsair is rated to run at DDR400 mhz in other words the minimum needed to run an 800fsb processor.
Corsair quote the PC3700 as being rated for DDR466 mhz, now obviously you will get some room to manouver but i doubt you will make DDR440 mhz with your current memory, however if you slacken off the memory timings you may get lucky.
PC4000 is rated for DDR500 mhz.
Edited to show the DDR mhz ratings.