|"Currently in market DDR1 with 333 Mhz or higher only available"|
What market is that? If you're in the US, there are plenty of sites that still sell PC2100. Try newegg.com or frys.com.
Don't get confused by the DDR rating. There is no DDR1 RAM that runs at 333MHz...you're referring to DDR333 (PC2700) which actually runs at 166MHz. The true speed of DDR is always 1/2 the advertised speed. What you need is DDR266 (PC2100) which runs at 133MHz.