I wanted a simple way to see how my altcoin holdings were doing relative to BTC, so I started working on a simple Google Docs spreadsheet to track all the currencies in your Vircurex account. It also pulls live prices from Vircurex's API (select "Update Prices" from the "Scripts" menu) so you can see your gains/losses, and percent of each currency (in BTC).
You have to copy/paste transactions into the spreadsheet.
https://drive.google.com/previewtemplate?id=0AmwLhnBvBBD7dGpFV2lhcllZN2M1UnYybTIxZl9xMnc&mode=publicHowever, it doesn't support "sell" transactions yet, so if you include those it will screw up your numbers. And it can only shows prices in BTC.
Ideally it will automatically pull transactions from the Vircurex API (but I'm not sure if it supports that yet).
Let me know if you make any improvements and I'll merge them into the template.
Donate:
BTC: 16sz62iEpE4ac9He1CncXR4iGSYgKRCF9c
LTC: LaD4uPeY5urDp7NvgWXvxvURx8Vomv2gT9
NMC: N4MnHDWirL98jawXZtvkZzDpVYqjQbtJ27