Installing multiple versions of NWDS on PC : overwrite problem

Helo,

On my PC I have NWDS 7.0.11.

I wish install on the same PC NWDS 7.0.10 because i work on 2 differents projects.

When I launch IDE70setup.exe in order to install NWDS 7.0.10 i have only 2 choices :

- Update : Keep SAP NWDS 7.0.10 components up to date with the installation souce

- Uninstal SAP 7.0.10

If i try update, NWDS 7.0.11 is overwrited by NWDS 7.0.10 : that is the problem.

I wish install NWDS 7.0.10 and NWDS 7.0.11 on dfferents windows path on the same PC. Is it possible ?

Thank you for your help