Yes, DDRII-800 is what you'll need. That RAM stick is DDRII-800.
Here's one:
Newegg.com - G.SKILL 2GB 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Desktop Memory Model F2-6400CL5S-2GBNT
Oh and...bear hug...how can you give a bear hug when I'm a bear myself?
Here's one:
Newegg.com - G.SKILL 2GB 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Desktop Memory Model F2-6400CL5S-2GBNT
Oh and...bear hug...how can you give a bear hug when I'm a bear myself?