Do you mean URI::Escape or URI::Escape::XS? The former is part of URI, which shouldn't require a complicated installation (no non-Perl parts). The latter is obviously more complicated as it requires compilation of XS. URI should be available like ActivePerl's PPM, not sure about the other.

Update: missed the version number. Yeah, you may need to compile URI::Escape::XS, but is it necessary, have you profiled your code, is URI::Escape a significant bottleneck.