0.18um to 90nm in Virtuoso

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I have a 0.18 um 8K bit SRAM schematic in Cadence Virtuoso,
I want to scale it to 90 nm, which means to change the width and length of every MOSFETs to half of origin size,
But is has too many MOSFETs,I don't want change it one by one,
is there any fast way to do it?
Thanks~~
 

Actually, it's not just about scaling the widths. Different technologies may affect the design in various ways. 90nm and below technologies show greater short channel effects. You should redesign the RAM cell, and check the noise margins. You will definitely have to change the sizes in a particular way, and not just halving them.

If you are sure that you don't care about these effects, then an easy way to change all the lengths and widths is by selecting multiple instances and changing their properties at the same time. You can do this by selecting "all selected" in the properties window.
 
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