[Plugin: Google XML Sitemaps] Moved Website and Plugin looks for wrong path

Greetings,

i recently moved my website from a LINUX/APACHE server to a WIN2003/IIS one. I moved the SQL and files, everything works ok but when i got to Google Sitemap Gemenrator Configuration Page, it shows an error message with the path referring to my old website, as following:
(Censored logins: XXX = my old login // YYY = my new login)

PHP Warning: filemtime() [function.filemtime]: stat failed for /home/XXX/public_html/gsm/sitemap.xml in E:\home\YYY\Web\wp-content\plugins\google-sitemap-generator\sitemap-ui.php on line 600

PHP Warning: filemtime() [function.filemtime]: stat failed for /home/XXX/public_html/gsm/sitemap.xml.gz in E:\home\YYY\Web\wp-content\plugins\google-sitemap-generator\sitemap-ui.php on line 609

I deleted everything and installed a fresh copy of it but yet say the same thing. I tried find the problem but i’m not expert in PHP so i just managed to see that the $status var is picking the wrong path but, from WHERE?

What should i do or where i need to edit something in SQL? I tried find something like /home/XXX/public_html/ in SQL but there are so many tables, i got lost >_<

Thanks