I'm araid, I can't really help you there. What I can help you a bit with is with what Pelasgian is in general. My opinion is that it is wrong to think of Pelasgian as "one" language: "Pelasgian" basically refers to any non-Greek elements (regardless of wether they are Indo-European or non-Indo-European) that are found in Greek and that are impossible to derive from PIE via the 'native' sound laws of Greek. What I already hinted to is that these words do not come from one language, but far more probably several.
One particularly devious example of an ostensibly 'Pelasgian' word is the word "pyrgos" (πυργος - "tower"). This word is conceivably of Indo-European origin and has cognates in many other Indo-European branches, including Celtic (Old Irish "bríg", meaning "power" or "force"), Germanic (German "Burg"), Italic (Latin "fortis", "strong") and Indo-Iranic (Avestan "berez", "high", "great").
As we can see from Germanic *b- and Italic *f-, the reconstructed Proto-Indo-European form here is *bh-, which is commonly reflected into Greek as *ph- (*φ), for example in PIE *bher- ("to bear", "to carry"): English "to bear", Latin "ferre", Greek "phero" (if you compare with the forms above, you can see that this is perfectly regular). So, the form "pyrgos" cannot be native Greek and must be borrowed from elsewhere.