Not exactly. EasyTutu(=newer and better Tutu in English) is not just a mod, it's a whole engine conversion. And it needs an unmodded install of BG1 and TotSC, which means you have to run that Setup-bg1ub.exe first and choose U for uninstall.
What you have to do is go here:
http://usoutpost31.com/easytutu/ - and read VERY carefully - it's simple, it's easy, but you have to read the instructions first. You will install your EasyTutu, get a whole new BGEasyTutu directory for BG1 in BG2 engine, and then you'll be able to install mods, including Tutu enhancements, yes.
And since you haven't been installing mods for a while, here's another reminder: before installing mods, every game(including Bg1, and EasyTutu, when you install it) needs a clean backup:
http://forums.pocketplane.net/index.php?topic=17555 - read more here.