Check one more link I just added to my post above. It's a $400 (yikes!) accessory DVD-ROM for many Toshiba laptops, but not specifically yours, even though the support bulletin for it applies to your model. I don't know...!
I do know that Ram is upgradeable to 160 Mb by a 128 mb module.
You can get it directly from Kingston Technologies, Fountain Valley, CA, or you could go browsing around on auction sites and get it for a relative bargain (maybe $100 to $200).
Yep, it's a KTT 8000/128; retails for $250, but you can find it all day for less than $150.